Identifier
- St000700: Ordered trees ⟶ ℤ
Values
[[]] => 1
[[],[]] => 1
[[[]]] => 2
[[],[],[]] => 1
[[],[[]]] => 1
[[[]],[]] => 1
[[[],[]]] => 2
[[[[]]]] => 3
[[],[],[],[]] => 1
[[],[],[[]]] => 1
[[],[[]],[]] => 1
[[],[[],[]]] => 1
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[[[]],[],[]] => 1
[[[]],[[]]] => 2
[[[],[]],[]] => 1
[[[[]]],[]] => 1
[[[],[],[]]] => 2
[[[],[[]]]] => 2
[[[[]],[]]] => 2
[[[[],[]]]] => 3
[[[[[]]]]] => 4
[[],[],[],[],[]] => 1
[[],[],[],[[]]] => 1
[[],[],[[]],[]] => 1
[[],[],[[],[]]] => 1
[[],[],[[[]]]] => 1
[[],[[]],[],[]] => 1
[[],[[]],[[]]] => 1
[[],[[],[]],[]] => 1
[[],[[[]]],[]] => 1
[[],[[],[],[]]] => 1
[[],[[],[[]]]] => 1
[[],[[[]],[]]] => 1
[[],[[[],[]]]] => 1
[[],[[[[]]]]] => 1
[[[]],[],[],[]] => 1
[[[]],[],[[]]] => 1
[[[]],[[]],[]] => 1
[[[]],[[],[]]] => 2
[[[]],[[[]]]] => 2
[[[],[]],[],[]] => 1
[[[[]]],[],[]] => 1
[[[],[]],[[]]] => 2
[[[[]]],[[]]] => 2
[[[],[],[]],[]] => 1
[[[],[[]]],[]] => 1
[[[[]],[]],[]] => 1
[[[[],[]]],[]] => 1
[[[[[]]]],[]] => 1
[[[],[],[],[]]] => 2
[[[],[],[[]]]] => 2
[[[],[[]],[]]] => 2
[[[],[[],[]]]] => 2
[[[],[[[]]]]] => 2
[[[[]],[],[]]] => 2
[[[[]],[[]]]] => 3
[[[[],[]],[]]] => 2
[[[[[]]],[]]] => 2
[[[[],[],[]]]] => 3
[[[[],[[]]]]] => 3
[[[[[]],[]]]] => 3
[[[[[],[]]]]] => 4
[[[[[[]]]]]] => 5
[[],[],[],[],[],[]] => 1
[[],[],[],[],[[]]] => 1
[[],[],[],[[]],[]] => 1
[[],[],[],[[],[]]] => 1
[[],[],[],[[[]]]] => 1
[[],[],[[]],[],[]] => 1
[[],[],[[]],[[]]] => 1
[[],[],[[],[]],[]] => 1
[[],[],[[[]]],[]] => 1
[[],[],[[],[],[]]] => 1
[[],[],[[],[[]]]] => 1
[[],[],[[[]],[]]] => 1
[[],[],[[[],[]]]] => 1
[[],[],[[[[]]]]] => 1
[[],[[]],[],[],[]] => 1
[[],[[]],[],[[]]] => 1
[[],[[]],[[]],[]] => 1
[[],[[]],[[],[]]] => 1
[[],[[]],[[[]]]] => 1
[[],[[],[]],[],[]] => 1
[[],[[[]]],[],[]] => 1
[[],[[],[]],[[]]] => 1
[[],[[[]]],[[]]] => 1
[[],[[],[],[]],[]] => 1
[[],[[],[[]]],[]] => 1
[[],[[[]],[]],[]] => 1
[[],[[[],[]]],[]] => 1
[[],[[[[]]]],[]] => 1
[[],[[],[],[],[]]] => 1
[[],[[],[],[[]]]] => 1
[[],[[],[[]],[]]] => 1
[[],[[],[[],[]]]] => 1
[[],[[],[[[]]]]] => 1
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[[],[[[]],[[]]]] => 1
[[],[[[],[]],[]]] => 1
[[],[[[[]]],[]]] => 1
>>> Load all 1404 entries. <<<[[],[[[],[],[]]]] => 1
[[],[[[],[[]]]]] => 1
[[],[[[[]],[]]]] => 1
[[],[[[[],[]]]]] => 1
[[],[[[[[]]]]]] => 1
[[[]],[],[],[],[]] => 1
[[[]],[],[],[[]]] => 1
[[[]],[],[[]],[]] => 1
[[[]],[],[[],[]]] => 1
[[[]],[],[[[]]]] => 1
[[[]],[[]],[],[]] => 1
[[[]],[[]],[[]]] => 2
[[[]],[[],[]],[]] => 1
[[[]],[[[]]],[]] => 1
[[[]],[[],[],[]]] => 2
[[[]],[[],[[]]]] => 2
[[[]],[[[]],[]]] => 2
[[[]],[[[],[]]]] => 2
[[[]],[[[[]]]]] => 2
[[[],[]],[],[],[]] => 1
[[[[]]],[],[],[]] => 1
[[[],[]],[],[[]]] => 1
[[[[]]],[],[[]]] => 1
[[[],[]],[[]],[]] => 1
[[[[]]],[[]],[]] => 1
[[[],[]],[[],[]]] => 2
[[[],[]],[[[]]]] => 2
[[[[]]],[[],[]]] => 2
[[[[]]],[[[]]]] => 3
[[[],[],[]],[],[]] => 1
[[[],[[]]],[],[]] => 1
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[[[[],[]]],[],[]] => 1
[[[[[]]]],[],[]] => 1
[[[],[],[]],[[]]] => 2
[[[],[[]]],[[]]] => 2
[[[[]],[]],[[]]] => 2
[[[[],[]]],[[]]] => 2
[[[[[]]]],[[]]] => 2
[[[],[],[],[]],[]] => 1
[[[],[],[[]]],[]] => 1
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[[[],[[[]]]],[]] => 1
[[[[]],[],[]],[]] => 1
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[[[[],[[]]]],[]] => 1
[[[[[]],[]]],[]] => 1
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[[[[[[]]]]],[]] => 1
[[[],[],[],[],[]]] => 2
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[[[],[],[[]],[]]] => 2
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[[[],[],[[[]]]]] => 2
[[[],[[]],[],[]]] => 2
[[[],[[]],[[]]]] => 2
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[[[],[[[[]]]]]] => 2
[[[[]],[],[],[]]] => 2
[[[[]],[],[[]]]] => 2
[[[[]],[[]],[]]] => 2
[[[[]],[[],[]]]] => 3
[[[[]],[[[]]]]] => 3
[[[[],[]],[],[]]] => 2
[[[[[]]],[],[]]] => 2
[[[[],[]],[[]]]] => 3
[[[[[]]],[[]]]] => 3
[[[[],[],[]],[]]] => 2
[[[[],[[]]],[]]] => 2
[[[[[]],[]],[]]] => 2
[[[[[],[]]],[]]] => 2
[[[[[[]]]],[]]] => 2
[[[[],[],[],[]]]] => 3
[[[[],[],[[]]]]] => 3
[[[[],[[]],[]]]] => 3
[[[[],[[],[]]]]] => 3
[[[[],[[[]]]]]] => 3
[[[[[]],[],[]]]] => 3
[[[[[]],[[]]]]] => 4
[[[[[],[]],[]]]] => 3
[[[[[[]]],[]]]] => 3
[[[[[],[],[]]]]] => 4
[[[[[],[[]]]]]] => 4
[[[[[[]],[]]]]] => 4
[[[[[[],[]]]]]] => 5
[[[[[[[]]]]]]] => 6
[[],[],[],[],[],[],[]] => 1
[[],[],[],[],[],[[]]] => 1
[[],[],[],[],[[]],[]] => 1
[[],[],[],[],[[],[]]] => 1
[[],[],[],[],[[[]]]] => 1
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[[],[],[[[[]]]],[]] => 1
[[],[],[[],[],[],[]]] => 1
[[],[],[[],[],[[]]]] => 1
[[],[],[[],[[]],[]]] => 1
[[],[],[[],[[],[]]]] => 1
[[],[],[[],[[[]]]]] => 1
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[[],[],[[[],[],[]]]] => 1
[[],[],[[[],[[]]]]] => 1
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[[],[],[[[[[]]]]]] => 1
[[],[[]],[],[],[],[]] => 1
[[],[[]],[],[],[[]]] => 1
[[],[[]],[],[[]],[]] => 1
[[],[[]],[],[[],[]]] => 1
[[],[[]],[],[[[]]]] => 1
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[[],[[]],[[]],[[]]] => 1
[[],[[]],[[],[]],[]] => 1
[[],[[]],[[[]]],[]] => 1
[[],[[]],[[],[],[]]] => 1
[[],[[]],[[],[[]]]] => 1
[[],[[]],[[[]],[]]] => 1
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[[],[[]],[[[[]]]]] => 1
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[[],[[[]]],[],[],[]] => 1
[[],[[],[]],[],[[]]] => 1
[[],[[[]]],[],[[]]] => 1
[[],[[],[]],[[]],[]] => 1
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[[],[[],[]],[[[]]]] => 1
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[[],[[[[]],[]]],[]] => 1
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[[],[[],[],[],[],[]]] => 1
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[[],[[],[[],[]],[]]] => 1
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[[],[[],[[],[[]]]]] => 1
[[],[[],[[[]],[]]]] => 1
[[],[[],[[[],[]]]]] => 1
[[],[[],[[[[]]]]]] => 1
[[],[[[]],[],[],[]]] => 1
[[],[[[]],[],[[]]]] => 1
[[],[[[]],[[]],[]]] => 1
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[[],[[[]],[[[]]]]] => 1
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[[],[[[],[]],[[]]]] => 1
[[],[[[[]]],[[]]]] => 1
[[],[[[],[],[]],[]]] => 1
[[],[[[],[[]]],[]]] => 1
[[],[[[[]],[]],[]]] => 1
[[],[[[[],[]]],[]]] => 1
[[],[[[[[]]]],[]]] => 1
[[],[[[],[],[],[]]]] => 1
[[],[[[],[],[[]]]]] => 1
[[],[[[],[[]],[]]]] => 1
[[],[[[],[[],[]]]]] => 1
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[[],[[[[]],[],[]]]] => 1
[[],[[[[]],[[]]]]] => 1
[[],[[[[],[]],[]]]] => 1
[[],[[[[[]]],[]]]] => 1
[[],[[[[],[],[]]]]] => 1
[[],[[[[],[[]]]]]] => 1
[[],[[[[[]],[]]]]] => 1
[[],[[[[[],[]]]]]] => 1
[[],[[[[[[]]]]]]] => 1
[[[]],[],[],[],[],[]] => 1
[[[]],[],[],[],[[]]] => 1
[[[]],[],[],[[]],[]] => 1
[[[]],[],[],[[],[]]] => 1
[[[]],[],[],[[[]]]] => 1
[[[]],[],[[]],[],[]] => 1
[[[]],[],[[]],[[]]] => 1
[[[]],[],[[],[]],[]] => 1
[[[]],[],[[[]]],[]] => 1
[[[]],[],[[],[],[]]] => 1
[[[]],[],[[],[[]]]] => 1
[[[]],[],[[[]],[]]] => 1
[[[]],[],[[[],[]]]] => 1
[[[]],[],[[[[]]]]] => 1
[[[]],[[]],[],[],[]] => 1
[[[]],[[]],[],[[]]] => 1
[[[]],[[]],[[]],[]] => 1
[[[]],[[]],[[],[]]] => 2
[[[]],[[]],[[[]]]] => 2
[[[]],[[],[]],[],[]] => 1
[[[]],[[[]]],[],[]] => 1
[[[]],[[],[]],[[]]] => 2
[[[]],[[[]]],[[]]] => 2
[[[]],[[],[],[]],[]] => 1
[[[]],[[],[[]]],[]] => 1
[[[]],[[[]],[]],[]] => 1
[[[]],[[[],[]]],[]] => 1
[[[]],[[[[]]]],[]] => 1
[[[]],[[],[],[],[]]] => 2
[[[]],[[],[],[[]]]] => 2
[[[]],[[],[[]],[]]] => 2
[[[]],[[],[[],[]]]] => 2
[[[]],[[],[[[]]]]] => 2
[[[]],[[[]],[],[]]] => 2
[[[]],[[[]],[[]]]] => 2
[[[]],[[[],[]],[]]] => 2
[[[]],[[[[]]],[]]] => 2
[[[]],[[[],[],[]]]] => 2
[[[]],[[[],[[]]]]] => 2
[[[]],[[[[]],[]]]] => 2
[[[]],[[[[],[]]]]] => 2
[[[]],[[[[[]]]]]] => 2
[[[],[]],[],[],[],[]] => 1
[[[[]]],[],[],[],[]] => 1
[[[],[]],[],[],[[]]] => 1
[[[[]]],[],[],[[]]] => 1
[[[],[]],[],[[]],[]] => 1
[[[[]]],[],[[]],[]] => 1
[[[],[]],[],[[],[]]] => 1
[[[],[]],[],[[[]]]] => 1
[[[[]]],[],[[],[]]] => 1
[[[[]]],[],[[[]]]] => 1
[[[],[]],[[]],[],[]] => 1
[[[[]]],[[]],[],[]] => 1
[[[],[]],[[]],[[]]] => 2
[[[[]]],[[]],[[]]] => 2
[[[],[]],[[],[]],[]] => 1
[[[],[]],[[[]]],[]] => 1
[[[[]]],[[],[]],[]] => 1
[[[[]]],[[[]]],[]] => 1
[[[],[]],[[],[],[]]] => 2
[[[],[]],[[],[[]]]] => 2
[[[],[]],[[[]],[]]] => 2
[[[],[]],[[[],[]]]] => 2
[[[],[]],[[[[]]]]] => 2
[[[[]]],[[],[],[]]] => 2
[[[[]]],[[],[[]]]] => 2
[[[[]]],[[[]],[]]] => 2
[[[[]]],[[[],[]]]] => 3
[[[[]]],[[[[]]]]] => 3
[[[],[],[]],[],[],[]] => 1
[[[],[[]]],[],[],[]] => 1
[[[[]],[]],[],[],[]] => 1
[[[[],[]]],[],[],[]] => 1
[[[[[]]]],[],[],[]] => 1
[[[],[],[]],[],[[]]] => 1
[[[],[[]]],[],[[]]] => 1
[[[[]],[]],[],[[]]] => 1
[[[[],[]]],[],[[]]] => 1
[[[[[]]]],[],[[]]] => 1
[[[],[],[]],[[]],[]] => 1
[[[],[[]]],[[]],[]] => 1
[[[[]],[]],[[]],[]] => 1
[[[[],[]]],[[]],[]] => 1
[[[[[]]]],[[]],[]] => 1
[[[],[],[]],[[],[]]] => 2
[[[],[],[]],[[[]]]] => 2
[[[],[[]]],[[],[]]] => 2
[[[],[[]]],[[[]]]] => 2
[[[[]],[]],[[],[]]] => 2
[[[[]],[]],[[[]]]] => 2
[[[[],[]]],[[],[]]] => 2
[[[[],[]]],[[[]]]] => 3
[[[[[]]]],[[],[]]] => 2
[[[[[]]]],[[[]]]] => 3
[[[],[],[],[]],[],[]] => 1
[[[],[],[[]]],[],[]] => 1
[[[],[[]],[]],[],[]] => 1
[[[],[[],[]]],[],[]] => 1
[[[],[[[]]]],[],[]] => 1
[[[[]],[],[]],[],[]] => 1
[[[[]],[[]]],[],[]] => 1
[[[[],[]],[]],[],[]] => 1
[[[[[]]],[]],[],[]] => 1
[[[[],[],[]]],[],[]] => 1
[[[[],[[]]]],[],[]] => 1
[[[[[]],[]]],[],[]] => 1
[[[[[],[]]]],[],[]] => 1
[[[[[[]]]]],[],[]] => 1
[[[],[],[],[]],[[]]] => 2
[[[],[],[[]]],[[]]] => 2
[[[],[[]],[]],[[]]] => 2
[[[],[[],[]]],[[]]] => 2
[[[],[[[]]]],[[]]] => 2
[[[[]],[],[]],[[]]] => 2
[[[[]],[[]]],[[]]] => 2
[[[[],[]],[]],[[]]] => 2
[[[[[]]],[]],[[]]] => 2
[[[[],[],[]]],[[]]] => 2
[[[[],[[]]]],[[]]] => 2
[[[[[]],[]]],[[]]] => 2
[[[[[],[]]]],[[]]] => 2
[[[[[[]]]]],[[]]] => 2
[[[],[],[],[],[]],[]] => 1
[[[],[],[],[[]]],[]] => 1
[[[],[],[[]],[]],[]] => 1
[[[],[],[[],[]]],[]] => 1
[[[],[],[[[]]]],[]] => 1
[[[],[[]],[],[]],[]] => 1
[[[],[[]],[[]]],[]] => 1
[[[],[[],[]],[]],[]] => 1
[[[],[[[]]],[]],[]] => 1
[[[],[[],[],[]]],[]] => 1
[[[],[[],[[]]]],[]] => 1
[[[],[[[]],[]]],[]] => 1
[[[],[[[],[]]]],[]] => 1
[[[],[[[[]]]]],[]] => 1
[[[[]],[],[],[]],[]] => 1
[[[[]],[],[[]]],[]] => 1
[[[[]],[[]],[]],[]] => 1
[[[[]],[[],[]]],[]] => 1
[[[[]],[[[]]]],[]] => 1
[[[[],[]],[],[]],[]] => 1
[[[[[]]],[],[]],[]] => 1
[[[[],[]],[[]]],[]] => 1
[[[[[]]],[[]]],[]] => 1
[[[[],[],[]],[]],[]] => 1
[[[[],[[]]],[]],[]] => 1
[[[[[]],[]],[]],[]] => 1
[[[[[],[]]],[]],[]] => 1
[[[[[[]]]],[]],[]] => 1
[[[[],[],[],[]]],[]] => 1
[[[[],[],[[]]]],[]] => 1
[[[[],[[]],[]]],[]] => 1
[[[[],[[],[]]]],[]] => 1
[[[[],[[[]]]]],[]] => 1
[[[[[]],[],[]]],[]] => 1
[[[[[]],[[]]]],[]] => 1
[[[[[],[]],[]]],[]] => 1
[[[[[[]]],[]]],[]] => 1
[[[[[],[],[]]]],[]] => 1
[[[[[],[[]]]]],[]] => 1
[[[[[[]],[]]]],[]] => 1
[[[[[[],[]]]]],[]] => 1
[[[[[[[]]]]]],[]] => 1
[[[],[],[],[],[],[]]] => 2
[[[],[],[],[],[[]]]] => 2
[[[],[],[],[[]],[]]] => 2
[[[],[],[],[[],[]]]] => 2
[[[],[],[],[[[]]]]] => 2
[[[],[],[[]],[],[]]] => 2
[[[],[],[[]],[[]]]] => 2
[[[],[],[[],[]],[]]] => 2
[[[],[],[[[]]],[]]] => 2
[[[],[],[[],[],[]]]] => 2
[[[],[],[[],[[]]]]] => 2
[[[],[],[[[]],[]]]] => 2
[[[],[],[[[],[]]]]] => 2
[[[],[],[[[[]]]]]] => 2
[[[],[[]],[],[],[]]] => 2
[[[],[[]],[],[[]]]] => 2
[[[],[[]],[[]],[]]] => 2
[[[],[[]],[[],[]]]] => 2
[[[],[[]],[[[]]]]] => 2
[[[],[[],[]],[],[]]] => 2
[[[],[[[]]],[],[]]] => 2
[[[],[[],[]],[[]]]] => 2
[[[],[[[]]],[[]]]] => 2
[[[],[[],[],[]],[]]] => 2
[[[],[[],[[]]],[]]] => 2
[[[],[[[]],[]],[]]] => 2
[[[],[[[],[]]],[]]] => 2
[[[],[[[[]]]],[]]] => 2
[[[],[[],[],[],[]]]] => 2
[[[],[[],[],[[]]]]] => 2
[[[],[[],[[]],[]]]] => 2
[[[],[[],[[],[]]]]] => 2
[[[],[[],[[[]]]]]] => 2
[[[],[[[]],[],[]]]] => 2
[[[],[[[]],[[]]]]] => 2
[[[],[[[],[]],[]]]] => 2
[[[],[[[[]]],[]]]] => 2
[[[],[[[],[],[]]]]] => 2
[[[],[[[],[[]]]]]] => 2
[[[],[[[[]],[]]]]] => 2
[[[],[[[[],[]]]]]] => 2
[[[],[[[[[]]]]]]] => 2
[[[[]],[],[],[],[]]] => 2
[[[[]],[],[],[[]]]] => 2
[[[[]],[],[[]],[]]] => 2
[[[[]],[],[[],[]]]] => 2
[[[[]],[],[[[]]]]] => 2
[[[[]],[[]],[],[]]] => 2
[[[[]],[[]],[[]]]] => 3
[[[[]],[[],[]],[]]] => 2
[[[[]],[[[]]],[]]] => 2
[[[[]],[[],[],[]]]] => 3
[[[[]],[[],[[]]]]] => 3
[[[[]],[[[]],[]]]] => 3
[[[[]],[[[],[]]]]] => 3
[[[[]],[[[[]]]]]] => 3
[[[[],[]],[],[],[]]] => 2
[[[[[]]],[],[],[]]] => 2
[[[[],[]],[],[[]]]] => 2
[[[[[]]],[],[[]]]] => 2
[[[[],[]],[[]],[]]] => 2
[[[[[]]],[[]],[]]] => 2
[[[[],[]],[[],[]]]] => 3
[[[[],[]],[[[]]]]] => 3
[[[[[]]],[[],[]]]] => 3
[[[[[]]],[[[]]]]] => 4
[[[[],[],[]],[],[]]] => 2
[[[[],[[]]],[],[]]] => 2
[[[[[]],[]],[],[]]] => 2
[[[[[],[]]],[],[]]] => 2
[[[[[[]]]],[],[]]] => 2
[[[[],[],[]],[[]]]] => 3
[[[[],[[]]],[[]]]] => 3
[[[[[]],[]],[[]]]] => 3
[[[[[],[]]],[[]]]] => 3
[[[[[[]]]],[[]]]] => 3
[[[[],[],[],[]],[]]] => 2
[[[[],[],[[]]],[]]] => 2
[[[[],[[]],[]],[]]] => 2
[[[[],[[],[]]],[]]] => 2
[[[[],[[[]]]],[]]] => 2
[[[[[]],[],[]],[]]] => 2
[[[[[]],[[]]],[]]] => 2
[[[[[],[]],[]],[]]] => 2
[[[[[[]]],[]],[]]] => 2
[[[[[],[],[]]],[]]] => 2
[[[[[],[[]]]],[]]] => 2
[[[[[[]],[]]],[]]] => 2
[[[[[[],[]]]],[]]] => 2
[[[[[[[]]]]],[]]] => 2
[[[[],[],[],[],[]]]] => 3
[[[[],[],[],[[]]]]] => 3
[[[[],[],[[]],[]]]] => 3
[[[[],[],[[],[]]]]] => 3
[[[[],[],[[[]]]]]] => 3
[[[[],[[]],[],[]]]] => 3
[[[[],[[]],[[]]]]] => 3
[[[[],[[],[]],[]]]] => 3
[[[[],[[[]]],[]]]] => 3
[[[[],[[],[],[]]]]] => 3
[[[[],[[],[[]]]]]] => 3
[[[[],[[[]],[]]]]] => 3
[[[[],[[[],[]]]]]] => 3
[[[[],[[[[]]]]]]] => 3
[[[[[]],[],[],[]]]] => 3
[[[[[]],[],[[]]]]] => 3
[[[[[]],[[]],[]]]] => 3
[[[[[]],[[],[]]]]] => 4
[[[[[]],[[[]]]]]] => 4
[[[[[],[]],[],[]]]] => 3
[[[[[[]]],[],[]]]] => 3
[[[[[],[]],[[]]]]] => 4
[[[[[[]]],[[]]]]] => 4
[[[[[],[],[]],[]]]] => 3
[[[[[],[[]]],[]]]] => 3
[[[[[[]],[]],[]]]] => 3
[[[[[[],[]]],[]]]] => 3
[[[[[[[]]]],[]]]] => 3
[[[[[],[],[],[]]]]] => 4
[[[[[],[],[[]]]]]] => 4
[[[[[],[[]],[]]]]] => 4
[[[[[],[[],[]]]]]] => 4
[[[[[],[[[]]]]]]] => 4
[[[[[[]],[],[]]]]] => 4
[[[[[[]],[[]]]]]] => 5
[[[[[[],[]],[]]]]] => 4
[[[[[[[]]],[]]]]] => 4
[[[[[[],[],[]]]]]] => 5
[[[[[[],[[]]]]]]] => 5
[[[[[[[]],[]]]]]] => 5
[[[[[[[],[]]]]]]] => 6
[[[[[[[[]]]]]]]] => 7
[[],[],[],[],[],[],[],[]] => 1
[[],[],[],[],[],[],[[]]] => 1
[[],[],[],[],[],[[]],[]] => 1
[[],[],[],[],[],[[],[]]] => 1
[[],[],[],[],[],[[[]]]] => 1
[[],[],[],[],[[]],[],[]] => 1
[[],[],[],[],[[]],[[]]] => 1
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[[[]],[[]],[[[]],[]]] => 2
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[[[]],[[],[]],[],[],[]] => 1
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[[[]],[[],[]],[[],[]]] => 2
[[[]],[[],[]],[[[]]]] => 2
[[[]],[[[]]],[[],[]]] => 2
[[[]],[[[]]],[[[]]]] => 2
[[[]],[[],[],[]],[],[]] => 1
[[[]],[[],[[]]],[],[]] => 1
[[[]],[[[]],[]],[],[]] => 1
[[[]],[[[],[]]],[],[]] => 1
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[[[]],[[],[[]]],[[]]] => 2
[[[]],[[[]],[]],[[]]] => 2
[[[]],[[[],[]]],[[]]] => 2
[[[]],[[[[]]]],[[]]] => 2
[[[]],[[],[],[],[]],[]] => 1
[[[]],[[],[],[[]]],[]] => 1
[[[]],[[],[[]],[]],[]] => 1
[[[]],[[],[[],[]]],[]] => 1
[[[]],[[],[[[]]]],[]] => 1
[[[]],[[[]],[],[]],[]] => 1
[[[]],[[[]],[[]]],[]] => 1
[[[]],[[[],[]],[]],[]] => 1
[[[]],[[[[]]],[]],[]] => 1
[[[]],[[[],[],[]]],[]] => 1
[[[]],[[[],[[]]]],[]] => 1
[[[]],[[[[]],[]]],[]] => 1
[[[]],[[[[],[]]]],[]] => 1
[[[]],[[[[[]]]]],[]] => 1
[[[]],[[],[],[],[],[]]] => 2
[[[]],[[],[],[],[[]]]] => 2
[[[]],[[],[],[[]],[]]] => 2
[[[]],[[],[],[[],[]]]] => 2
[[[]],[[],[],[[[]]]]] => 2
[[[]],[[],[[]],[],[]]] => 2
[[[]],[[],[[]],[[]]]] => 2
[[[]],[[],[[],[]],[]]] => 2
[[[]],[[],[[[]]],[]]] => 2
[[[]],[[],[[],[],[]]]] => 2
[[[]],[[],[[],[[]]]]] => 2
[[[]],[[],[[[]],[]]]] => 2
[[[]],[[],[[[],[]]]]] => 2
[[[]],[[],[[[[]]]]]] => 2
[[[]],[[[]],[],[],[]]] => 2
[[[]],[[[]],[],[[]]]] => 2
[[[]],[[[]],[[]],[]]] => 2
[[[]],[[[]],[[],[]]]] => 2
[[[]],[[[]],[[[]]]]] => 2
[[[]],[[[],[]],[],[]]] => 2
[[[]],[[[[]]],[],[]]] => 2
[[[]],[[[],[]],[[]]]] => 2
[[[]],[[[[]]],[[]]]] => 2
[[[]],[[[],[],[]],[]]] => 2
[[[]],[[[],[[]]],[]]] => 2
[[[]],[[[[]],[]],[]]] => 2
[[[]],[[[[],[]]],[]]] => 2
[[[]],[[[[[]]]],[]]] => 2
[[[]],[[[],[],[],[]]]] => 2
[[[]],[[[],[],[[]]]]] => 2
[[[]],[[[],[[]],[]]]] => 2
[[[]],[[[],[[],[]]]]] => 2
[[[]],[[[],[[[]]]]]] => 2
[[[]],[[[[]],[],[]]]] => 2
[[[]],[[[[]],[[]]]]] => 2
[[[]],[[[[],[]],[]]]] => 2
[[[]],[[[[[]]],[]]]] => 2
[[[]],[[[[],[],[]]]]] => 2
[[[]],[[[[],[[]]]]]] => 2
[[[]],[[[[[]],[]]]]] => 2
[[[]],[[[[[],[]]]]]] => 2
[[[]],[[[[[[]]]]]]] => 2
[[[],[]],[],[],[],[],[]] => 1
[[[[]]],[],[],[],[],[]] => 1
[[[],[]],[],[],[],[[]]] => 1
[[[[]]],[],[],[],[[]]] => 1
[[[],[]],[],[],[[]],[]] => 1
[[[[]]],[],[],[[]],[]] => 1
[[[],[]],[],[],[[],[]]] => 1
[[[],[]],[],[],[[[]]]] => 1
[[[[]]],[],[],[[],[]]] => 1
[[[[]]],[],[],[[[]]]] => 1
[[[],[]],[],[[]],[],[]] => 1
[[[[]]],[],[[]],[],[]] => 1
[[[],[]],[],[[]],[[]]] => 1
[[[[]]],[],[[]],[[]]] => 1
[[[],[]],[[],[[],[]]]] => 2
[[[],[]],[[[],[]],[]]] => 2
[[[],[[],[]]],[[],[]]] => 2
[[[[],[]],[]],[[],[]]] => 2
[[[],[[],[[],[]]]],[]] => 1
[[[],[[[],[]],[]]],[]] => 1
[[[[],[]],[[],[]]],[]] => 1
[[[[],[[],[]]],[]],[]] => 1
[[[[[],[]],[]],[]],[]] => 1
[[[[[],[[[]]]]]],[]] => 1
[[[[[[[]]],[]]]],[]] => 1
[[[[[[],[],[]]]]],[]] => 1
[[[[[[],[[]]]]]],[]] => 1
[[[[[[[]],[]]]]],[]] => 1
[[[[[[[],[]]]]]],[]] => 1
[[[[[[[[]]]]]]],[]] => 1
[[[[[[[[[]]]]]]]],[]] => 1
[[],[[[[[[[[]]]]]]]]] => 1
[[[[[[[[],[]]]]]]],[]] => 1
[[],[[[[[[[],[]]]]]]]] => 1
[[[[[[[[]],[]]]]]],[]] => 1
[[[[[[[],[[]]]]]]],[]] => 1
[[],[[[[[[[]],[]]]]]]] => 1
[[],[[[[[[],[[]]]]]]]] => 1
[[],[[],[[],[[],[[],[]]]]]] => 1
[[],[[],[[],[[[],[]],[]]]]] => 1
[[],[[],[[[],[]],[[],[]]]]] => 1
[[],[[],[[[],[[],[]]],[]]]] => 1
[[],[[],[[[[],[]],[]],[]]]] => 1
[[],[[[],[]],[[],[[],[]]]]] => 1
[[],[[[],[]],[[[],[]],[]]]] => 1
[[],[[[],[[],[]]],[[],[]]]] => 1
[[],[[[[],[]],[]],[[],[]]]] => 1
[[],[[[],[[],[[],[]]]],[]]] => 1
[[],[[[],[[[],[]],[]]],[]]] => 1
[[],[[[[],[]],[[],[]]],[]]] => 1
[[],[[[[],[[],[]]],[]],[]]] => 1
[[],[[[[[],[]],[]],[]],[]]] => 1
[[[],[]],[[],[[],[[],[]]]]] => 2
[[[],[]],[[],[[[],[]],[]]]] => 2
[[[],[]],[[[],[]],[[],[]]]] => 2
[[[],[]],[[[],[[],[]]],[]]] => 2
[[[],[]],[[[[],[]],[]],[]]] => 2
[[[],[[],[]]],[[],[[],[]]]] => 2
[[[],[[],[]]],[[[],[]],[]]] => 2
[[[[],[]],[]],[[],[[],[]]]] => 2
[[[[],[]],[]],[[[],[]],[]]] => 2
[[[],[[],[[],[]]]],[[],[]]] => 2
[[[],[[[],[]],[]]],[[],[]]] => 2
[[[[],[]],[[],[]]],[[],[]]] => 2
[[[[],[[],[]]],[]],[[],[]]] => 2
[[[[[],[]],[]],[]],[[],[]]] => 2
[[[],[[],[[],[[],[]]]]],[]] => 1
[[[],[[],[[[],[]],[]]]],[]] => 1
[[[],[[[],[]],[[],[]]]],[]] => 1
[[[],[[[],[[],[]]],[]]],[]] => 1
[[[],[[[[],[]],[]],[]]],[]] => 1
[[[[],[]],[[],[[],[]]]],[]] => 1
[[[[],[]],[[[],[]],[]]],[]] => 1
[[[[],[[],[]]],[[],[]]],[]] => 1
[[[[[],[]],[]],[[],[]]],[]] => 1
[[[[],[[],[[],[]]]],[]],[]] => 1
[[[[],[[[],[]],[]]],[]],[]] => 1
[[[[[],[]],[[],[]]],[]],[]] => 1
[[[[[],[[],[]]],[]],[]],[]] => 1
[[[[[[],[]],[]],[]],[]],[]] => 1
[[[[[[[[[[]]]]]]]]],[]] => 1
[[],[[[[[[[[[]]]]]]]]]] => 1
[[[[[[[[[],[]]]]]]]],[]] => 1
[[],[[[[[[[[],[]]]]]]]]] => 1
[[[[[[[[[[[]]]]]]]]]],[]] => 1
[[],[[[[[[[[[[]]]]]]]]]]] => 1
[[],[[],[[],[[],[[],[[],[]]]]]]] => 1
[[],[[],[[],[[],[[[],[]],[]]]]]] => 1
[[],[[],[[],[[[],[]],[[],[]]]]]] => 1
[[],[[],[[],[[[],[[],[]]],[]]]]] => 1
[[],[[],[[],[[[[],[]],[]],[]]]]] => 1
[[],[[],[[[],[]],[[],[[],[]]]]]] => 1
[[],[[],[[[],[]],[[[],[]],[]]]]] => 1
[[],[[],[[[],[[],[]]],[[],[]]]]] => 1
[[],[[],[[[[],[]],[]],[[],[]]]]] => 1
[[],[[],[[[],[[],[[],[]]]],[]]]] => 1
[[],[[],[[[],[[[],[]],[]]],[]]]] => 1
[[],[[],[[[[],[]],[[],[]]],[]]]] => 1
[[],[[],[[[[],[[],[]]],[]],[]]]] => 1
[[],[[],[[[[[],[]],[]],[]],[]]]] => 1
[[],[[[],[]],[[],[[],[[],[]]]]]] => 1
[[],[[[],[]],[[],[[[],[]],[]]]]] => 1
[[],[[[],[]],[[[],[]],[[],[]]]]] => 1
[[],[[[],[]],[[[],[[],[]]],[]]]] => 1
[[],[[[],[]],[[[[],[]],[]],[]]]] => 1
[[],[[[],[[],[]]],[[],[[],[]]]]] => 1
[[],[[[],[[],[]]],[[[],[]],[]]]] => 1
[[],[[[[],[]],[]],[[],[[],[]]]]] => 1
[[],[[[[],[]],[]],[[[],[]],[]]]] => 1
[[],[[[],[[],[[],[]]]],[[],[]]]] => 1
[[],[[[],[[[],[]],[]]],[[],[]]]] => 1
[[],[[[[],[]],[[],[]]],[[],[]]]] => 1
[[],[[[[],[[],[]]],[]],[[],[]]]] => 1
[[],[[[[[],[]],[]],[]],[[],[]]]] => 1
[[],[[[],[[],[[],[[],[]]]]],[]]] => 1
[[],[[[],[[],[[[],[]],[]]]],[]]] => 1
[[],[[[],[[[],[]],[[],[]]]],[]]] => 1
[[],[[[],[[[],[[],[]]],[]]],[]]] => 1
[[],[[[],[[[[],[]],[]],[]]],[]]] => 1
[[],[[[[],[]],[[],[[],[]]]],[]]] => 1
[[],[[[[],[]],[[[],[]],[]]],[]]] => 1
[[],[[[[],[[],[]]],[[],[]]],[]]] => 1
[[],[[[[[],[]],[]],[[],[]]],[]]] => 1
[[],[[[[],[[],[[],[]]]],[]],[]]] => 1
[[],[[[[],[[[],[]],[]]],[]],[]]] => 1
[[],[[[[[],[]],[[],[]]],[]],[]]] => 1
[[],[[[[[],[[],[]]],[]],[]],[]]] => 1
[[],[[[[[[],[]],[]],[]],[]],[]]] => 1
[[[],[]],[[],[[],[[],[[],[]]]]]] => 2
[[[],[]],[[],[[],[[[],[]],[]]]]] => 2
[[[],[]],[[],[[[],[]],[[],[]]]]] => 2
[[[],[]],[[],[[[],[[],[]]],[]]]] => 2
[[[],[]],[[],[[[[],[]],[]],[]]]] => 2
[[[],[]],[[[],[]],[[],[[],[]]]]] => 2
[[[],[]],[[[],[]],[[[],[]],[]]]] => 2
[[[],[]],[[[],[[],[]]],[[],[]]]] => 2
[[[],[]],[[[[],[]],[]],[[],[]]]] => 2
[[[],[]],[[[],[[],[[],[]]]],[]]] => 2
[[[],[]],[[[],[[[],[]],[]]],[]]] => 2
[[[],[]],[[[[],[]],[[],[]]],[]]] => 2
[[[],[]],[[[[],[[],[]]],[]],[]]] => 2
[[[],[]],[[[[[],[]],[]],[]],[]]] => 2
[[[],[[],[]]],[[],[[],[[],[]]]]] => 2
[[[],[[],[]]],[[],[[[],[]],[]]]] => 2
[[[],[[],[]]],[[[],[]],[[],[]]]] => 2
[[[],[[],[]]],[[[],[[],[]]],[]]] => 2
[[[],[[],[]]],[[[[],[]],[]],[]]] => 2
[[[[],[]],[]],[[],[[],[[],[]]]]] => 2
[[[[],[]],[]],[[],[[[],[]],[]]]] => 2
[[[[],[]],[]],[[[],[]],[[],[]]]] => 2
[[[[],[]],[]],[[[],[[],[]]],[]]] => 2
[[[[],[]],[]],[[[[],[]],[]],[]]] => 2
[[[],[[],[[],[]]]],[[],[[],[]]]] => 2
[[[],[[],[[],[]]]],[[[],[]],[]]] => 2
[[[],[[[],[]],[]]],[[],[[],[]]]] => 2
[[[],[[[],[]],[]]],[[[],[]],[]]] => 2
[[[[],[]],[[],[]]],[[],[[],[]]]] => 2
[[[[],[]],[[],[]]],[[[],[]],[]]] => 2
[[[[],[[],[]]],[]],[[],[[],[]]]] => 2
[[[[],[[],[]]],[]],[[[],[]],[]]] => 2
[[[[[],[]],[]],[]],[[],[[],[]]]] => 2
[[[[[],[]],[]],[]],[[[],[]],[]]] => 2
[[[],[[],[[],[[],[]]]]],[[],[]]] => 2
[[[],[[],[[[],[]],[]]]],[[],[]]] => 2
[[[],[[[],[]],[[],[]]]],[[],[]]] => 2
[[[],[[[],[[],[]]],[]]],[[],[]]] => 2
[[[],[[[[],[]],[]],[]]],[[],[]]] => 2
[[[[],[]],[[],[[],[]]]],[[],[]]] => 2
[[[[],[]],[[[],[]],[]]],[[],[]]] => 2
[[[[],[[],[]]],[[],[]]],[[],[]]] => 2
[[[[[],[]],[]],[[],[]]],[[],[]]] => 2
[[[[],[[],[[],[]]]],[]],[[],[]]] => 2
[[[[],[[[],[]],[]]],[]],[[],[]]] => 2
[[[[[],[]],[[],[]]],[]],[[],[]]] => 2
[[[[[],[[],[]]],[]],[]],[[],[]]] => 2
[[[[[[],[]],[]],[]],[]],[[],[]]] => 2
[[[],[[],[[],[[],[[],[]]]]]],[]] => 1
[[[],[[],[[],[[[],[]],[]]]]],[]] => 1
[[[],[[],[[[],[]],[[],[]]]]],[]] => 1
[[[],[[],[[[],[[],[]]],[]]]],[]] => 1
[[[],[[],[[[[],[]],[]],[]]]],[]] => 1
[[[],[[[],[]],[[],[[],[]]]]],[]] => 1
[[[],[[[],[]],[[[],[]],[]]]],[]] => 1
[[[],[[[],[[],[]]],[[],[]]]],[]] => 1
[[[],[[[[],[]],[]],[[],[]]]],[]] => 1
[[[],[[[],[[],[[],[]]]],[]]],[]] => 1
[[[],[[[],[[[],[]],[]]],[]]],[]] => 1
[[[],[[[[],[]],[[],[]]],[]]],[]] => 1
[[[],[[[[],[[],[]]],[]],[]]],[]] => 1
[[[],[[[[[],[]],[]],[]],[]]],[]] => 1
[[[[],[]],[[],[[],[[],[]]]]],[]] => 1
[[[[],[]],[[],[[[],[]],[]]]],[]] => 1
[[[[],[]],[[[],[]],[[],[]]]],[]] => 1
[[[[],[]],[[[],[[],[]]],[]]],[]] => 1
[[[[],[]],[[[[],[]],[]],[]]],[]] => 1
[[[[],[[],[]]],[[],[[],[]]]],[]] => 1
[[[[],[[],[]]],[[[],[]],[]]],[]] => 1
[[[[[],[]],[]],[[],[[],[]]]],[]] => 1
[[[[[],[]],[]],[[[],[]],[]]],[]] => 1
[[[[],[[],[[],[]]]],[[],[]]],[]] => 1
[[[[],[[[],[]],[]]],[[],[]]],[]] => 1
[[[[[],[]],[[],[]]],[[],[]]],[]] => 1
[[[[[],[[],[]]],[]],[[],[]]],[]] => 1
[[[[[[],[]],[]],[]],[[],[]]],[]] => 1
[[[[],[[],[[],[[],[]]]]],[]],[]] => 1
[[[[],[[],[[[],[]],[]]]],[]],[]] => 1
[[[[],[[[],[]],[[],[]]]],[]],[]] => 1
[[[[],[[[],[[],[]]],[]]],[]],[]] => 1
[[[[],[[[[],[]],[]],[]]],[]],[]] => 1
[[[[[],[]],[[],[[],[]]]],[]],[]] => 1
[[[[[],[]],[[[],[]],[]]],[]],[]] => 1
[[[[[],[[],[]]],[[],[]]],[]],[]] => 1
[[[[[[],[]],[]],[[],[]]],[]],[]] => 1
[[[[[],[[],[[],[]]]],[]],[]],[]] => 1
[[[[[],[[[],[]],[]]],[]],[]],[]] => 1
[[[[[[],[]],[[],[]]],[]],[]],[]] => 1
[[[[[[],[[],[]]],[]],[]],[]],[]] => 1
[[[[[[[],[]],[]],[]],[]],[]],[]] => 1
search for individual values
searching the database for the individual values of this statistic
/
search for generating function
searching the database for statistics with the same generating function
Generating function
click to show known generating functions
Search the OEIS for these generating functions
Search the Online Encyclopedia of Integer
Sequences for the coefficients of a few of the
first generating functions, in the case at hand:
1,1 3,1,1 8,4,1,1 24,12,4,1,1 75,38,13,4,1,1 243,125,42,13,4,1,1
$F_{2} = q$
$F_{3} = q + q^{2}$
$F_{4} = 3\ q + q^{2} + q^{3}$
$F_{5} = 8\ q + 4\ q^{2} + q^{3} + q^{4}$
$F_{6} = 24\ q + 12\ q^{2} + 4\ q^{3} + q^{4} + q^{5}$
$F_{7} = 75\ q + 38\ q^{2} + 13\ q^{3} + 4\ q^{4} + q^{5} + q^{6}$
$F_{8} = 243\ q + 125\ q^{2} + 42\ q^{3} + 13\ q^{4} + 4\ q^{5} + q^{6} + q^{7}$
Description
The protection number of an ordered tree.
This is the minimal distance from the root to a leaf.
This is the minimal distance from the root to a leaf.
References
[1] Heuberger, C., Prodinger, H. Protection Number in Plane Trees arXiv:1702.06816
Code
def statistic(T):
if len(T) == 0:
return 0
else:
return 1+min(statistic(S) for S in T)
Created
Feb 23, 2017 at 20:14 by Martin Rubey
Updated
Dec 26, 2017 at 12:32 by Martin Rubey
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