Processing math: 100%

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Identifier
Values
[1] => 1
[1,2] => 1
[2,1] => 1
[1,2,3] => 1
[1,3,2] => 1
[2,1,3] => 1
[2,3,1] => 1
[3,1,2] => 2
[3,2,1] => 0
[1,2,3,4] => 1
[1,2,4,3] => 1
[1,3,2,4] => 1
[1,3,4,2] => 1
[1,4,2,3] => 2
[1,4,3,2] => 0
[2,1,3,4] => 1
[2,1,4,3] => 1
[2,3,1,4] => 1
[2,3,4,1] => 1
[2,4,1,3] => 2
[2,4,3,1] => 0
[3,1,2,4] => 2
[3,1,4,2] => 2
[3,2,1,4] => 0
[3,2,4,1] => 0
[3,4,1,2] => 2
[3,4,2,1] => 0
[4,1,2,3] => 6
[4,1,3,2] => 0
[4,2,1,3] => 0
[4,2,3,1] => 0
[4,3,1,2] => 0
[4,3,2,1] => 0
[1,2,3,4,5] => 1
[1,2,3,5,4] => 1
[1,2,4,3,5] => 1
[1,2,4,5,3] => 1
[1,2,5,3,4] => 2
[1,2,5,4,3] => 0
[1,3,2,4,5] => 1
[1,3,2,5,4] => 1
[1,3,4,2,5] => 1
[1,3,4,5,2] => 1
[1,3,5,2,4] => 2
[1,3,5,4,2] => 0
[1,4,2,3,5] => 2
[1,4,2,5,3] => 2
[1,4,3,2,5] => 0
[1,4,3,5,2] => 0
[1,4,5,2,3] => 2
[1,4,5,3,2] => 0
[1,5,2,3,4] => 6
[1,5,2,4,3] => 0
[1,5,3,2,4] => 0
[1,5,3,4,2] => 0
[1,5,4,2,3] => 0
[1,5,4,3,2] => 0
[2,1,3,4,5] => 1
[2,1,3,5,4] => 1
[2,1,4,3,5] => 1
[2,1,4,5,3] => 1
[2,1,5,3,4] => 2
[2,1,5,4,3] => 0
[2,3,1,4,5] => 1
[2,3,1,5,4] => 1
[2,3,4,1,5] => 1
[2,3,4,5,1] => 1
[2,3,5,1,4] => 2
[2,3,5,4,1] => 0
[2,4,1,3,5] => 2
[2,4,1,5,3] => 2
[2,4,3,1,5] => 0
[2,4,3,5,1] => 0
[2,4,5,1,3] => 2
[2,4,5,3,1] => 0
[2,5,1,3,4] => 6
[2,5,1,4,3] => 0
[2,5,3,1,4] => 0
[2,5,3,4,1] => 0
[2,5,4,1,3] => 0
[2,5,4,3,1] => 0
[3,1,2,4,5] => 2
[3,1,2,5,4] => 2
[3,1,4,2,5] => 2
[3,1,4,5,2] => 2
[3,1,5,2,4] => 4
[3,1,5,4,2] => 0
[3,2,1,4,5] => 0
[3,2,1,5,4] => 0
[3,2,4,1,5] => 0
[3,2,4,5,1] => 0
[3,2,5,1,4] => 0
[3,2,5,4,1] => 0
[3,4,1,2,5] => 2
[3,4,1,5,2] => 2
[3,4,2,1,5] => 0
[3,4,2,5,1] => 0
[3,4,5,1,2] => 2
[3,4,5,2,1] => 0
[3,5,1,2,4] => 6
[3,5,1,4,2] => 0
>>> Load all 1229 entries. <<<
[3,5,2,1,4] => 0
[3,5,2,4,1] => 0
[3,5,4,1,2] => 0
[3,5,4,2,1] => 0
[4,1,2,3,5] => 6
[4,1,2,5,3] => 6
[4,1,3,2,5] => 0
[4,1,3,5,2] => 0
[4,1,5,2,3] => 6
[4,1,5,3,2] => 0
[4,2,1,3,5] => 0
[4,2,1,5,3] => 0
[4,2,3,1,5] => 0
[4,2,3,5,1] => 0
[4,2,5,1,3] => 0
[4,2,5,3,1] => 0
[4,3,1,2,5] => 0
[4,3,1,5,2] => 0
[4,3,2,1,5] => 0
[4,3,2,5,1] => 0
[4,3,5,1,2] => 0
[4,3,5,2,1] => 0
[4,5,1,2,3] => 6
[4,5,1,3,2] => 0
[4,5,2,1,3] => 0
[4,5,2,3,1] => 0
[4,5,3,1,2] => 0
[4,5,3,2,1] => 0
[5,1,2,3,4] => 24
[5,1,2,4,3] => 0
[5,1,3,2,4] => 0
[5,1,3,4,2] => 0
[5,1,4,2,3] => 0
[5,1,4,3,2] => 0
[5,2,1,3,4] => 0
[5,2,1,4,3] => 0
[5,2,3,1,4] => 0
[5,2,3,4,1] => 0
[5,2,4,1,3] => 0
[5,2,4,3,1] => 0
[5,3,1,2,4] => 0
[5,3,1,4,2] => 0
[5,3,2,1,4] => 0
[5,3,2,4,1] => 0
[5,3,4,1,2] => 0
[5,3,4,2,1] => 0
[5,4,1,2,3] => 0
[5,4,1,3,2] => 0
[5,4,2,1,3] => 0
[5,4,2,3,1] => 0
[5,4,3,1,2] => 0
[5,4,3,2,1] => 0
[1,2,3,4,5,6] => 1
[1,2,3,4,6,5] => 1
[1,2,3,5,4,6] => 1
[1,2,3,5,6,4] => 1
[1,2,3,6,4,5] => 2
[1,2,3,6,5,4] => 0
[1,2,4,3,5,6] => 1
[1,2,4,3,6,5] => 1
[1,2,4,5,3,6] => 1
[1,2,4,5,6,3] => 1
[1,2,4,6,3,5] => 2
[1,2,4,6,5,3] => 0
[1,2,5,3,4,6] => 2
[1,2,5,3,6,4] => 2
[1,2,5,4,3,6] => 0
[1,2,5,4,6,3] => 0
[1,2,5,6,3,4] => 2
[1,2,5,6,4,3] => 0
[1,2,6,3,4,5] => 6
[1,2,6,3,5,4] => 0
[1,2,6,4,3,5] => 0
[1,2,6,4,5,3] => 0
[1,2,6,5,3,4] => 0
[1,2,6,5,4,3] => 0
[1,3,2,4,5,6] => 1
[1,3,2,4,6,5] => 1
[1,3,2,5,4,6] => 1
[1,3,2,5,6,4] => 1
[1,3,2,6,4,5] => 2
[1,3,2,6,5,4] => 0
[1,3,4,2,5,6] => 1
[1,3,4,2,6,5] => 1
[1,3,4,5,2,6] => 1
[1,3,4,5,6,2] => 1
[1,3,4,6,2,5] => 2
[1,3,4,6,5,2] => 0
[1,3,5,2,4,6] => 2
[1,3,5,2,6,4] => 2
[1,3,5,4,2,6] => 0
[1,3,5,4,6,2] => 0
[1,3,5,6,2,4] => 2
[1,3,5,6,4,2] => 0
[1,3,6,2,4,5] => 6
[1,3,6,2,5,4] => 0
[1,3,6,4,2,5] => 0
[1,3,6,4,5,2] => 0
[1,3,6,5,2,4] => 0
[1,3,6,5,4,2] => 0
[1,4,2,3,5,6] => 2
[1,4,2,3,6,5] => 2
[1,4,2,5,3,6] => 2
[1,4,2,5,6,3] => 2
[1,4,2,6,3,5] => 4
[1,4,2,6,5,3] => 0
[1,4,3,2,5,6] => 0
[1,4,3,2,6,5] => 0
[1,4,3,5,2,6] => 0
[1,4,3,5,6,2] => 0
[1,4,3,6,2,5] => 0
[1,4,3,6,5,2] => 0
[1,4,5,2,3,6] => 2
[1,4,5,2,6,3] => 2
[1,4,5,3,2,6] => 0
[1,4,5,3,6,2] => 0
[1,4,5,6,2,3] => 2
[1,4,5,6,3,2] => 0
[1,4,6,2,3,5] => 6
[1,4,6,2,5,3] => 0
[1,4,6,3,2,5] => 0
[1,4,6,3,5,2] => 0
[1,4,6,5,2,3] => 0
[1,4,6,5,3,2] => 0
[1,5,2,3,4,6] => 6
[1,5,2,3,6,4] => 6
[1,5,2,4,3,6] => 0
[1,5,2,4,6,3] => 0
[1,5,2,6,3,4] => 6
[1,5,2,6,4,3] => 0
[1,5,3,2,4,6] => 0
[1,5,3,2,6,4] => 0
[1,5,3,4,2,6] => 0
[1,5,3,4,6,2] => 0
[1,5,3,6,2,4] => 0
[1,5,3,6,4,2] => 0
[1,5,4,2,3,6] => 0
[1,5,4,2,6,3] => 0
[1,5,4,3,2,6] => 0
[1,5,4,3,6,2] => 0
[1,5,4,6,2,3] => 0
[1,5,4,6,3,2] => 0
[1,5,6,2,3,4] => 6
[1,5,6,2,4,3] => 0
[1,5,6,3,2,4] => 0
[1,5,6,3,4,2] => 0
[1,5,6,4,2,3] => 0
[1,5,6,4,3,2] => 0
[1,6,2,3,4,5] => 24
[1,6,2,3,5,4] => 0
[1,6,2,4,3,5] => 0
[1,6,2,4,5,3] => 0
[1,6,2,5,3,4] => 0
[1,6,2,5,4,3] => 0
[1,6,3,2,4,5] => 0
[1,6,3,2,5,4] => 0
[1,6,3,4,2,5] => 0
[1,6,3,4,5,2] => 0
[1,6,3,5,2,4] => 0
[1,6,3,5,4,2] => 0
[1,6,4,2,3,5] => 0
[1,6,4,2,5,3] => 0
[1,6,4,3,2,5] => 0
[1,6,4,3,5,2] => 0
[1,6,4,5,2,3] => 0
[1,6,4,5,3,2] => 0
[1,6,5,2,3,4] => 0
[1,6,5,2,4,3] => 0
[1,6,5,3,2,4] => 0
[1,6,5,3,4,2] => 0
[1,6,5,4,2,3] => 0
[1,6,5,4,3,2] => 0
[2,1,3,4,5,6] => 1
[2,1,3,4,6,5] => 1
[2,1,3,5,4,6] => 1
[2,1,3,5,6,4] => 1
[2,1,3,6,4,5] => 2
[2,1,3,6,5,4] => 0
[2,1,4,3,5,6] => 1
[2,1,4,3,6,5] => 1
[2,1,4,5,3,6] => 1
[2,1,4,5,6,3] => 1
[2,1,4,6,3,5] => 2
[2,1,4,6,5,3] => 0
[2,1,5,3,4,6] => 2
[2,1,5,3,6,4] => 2
[2,1,5,4,3,6] => 0
[2,1,5,4,6,3] => 0
[2,1,5,6,3,4] => 2
[2,1,5,6,4,3] => 0
[2,1,6,3,4,5] => 6
[2,1,6,3,5,4] => 0
[2,1,6,4,3,5] => 0
[2,1,6,4,5,3] => 0
[2,1,6,5,3,4] => 0
[2,1,6,5,4,3] => 0
[2,3,1,4,5,6] => 1
[2,3,1,4,6,5] => 1
[2,3,1,5,4,6] => 1
[2,3,1,5,6,4] => 1
[2,3,1,6,4,5] => 2
[2,3,1,6,5,4] => 0
[2,3,4,1,5,6] => 1
[2,3,4,1,6,5] => 1
[2,3,4,5,1,6] => 1
[2,3,4,5,6,1] => 1
[2,3,4,6,1,5] => 2
[2,3,4,6,5,1] => 0
[2,3,5,1,4,6] => 2
[2,3,5,1,6,4] => 2
[2,3,5,4,1,6] => 0
[2,3,5,4,6,1] => 0
[2,3,5,6,1,4] => 2
[2,3,5,6,4,1] => 0
[2,3,6,1,4,5] => 6
[2,3,6,1,5,4] => 0
[2,3,6,4,1,5] => 0
[2,3,6,4,5,1] => 0
[2,3,6,5,1,4] => 0
[2,3,6,5,4,1] => 0
[2,4,1,3,5,6] => 2
[2,4,1,3,6,5] => 2
[2,4,1,5,3,6] => 2
[2,4,1,5,6,3] => 2
[2,4,1,6,3,5] => 4
[2,4,1,6,5,3] => 0
[2,4,3,1,5,6] => 0
[2,4,3,1,6,5] => 0
[2,4,3,5,1,6] => 0
[2,4,3,5,6,1] => 0
[2,4,3,6,1,5] => 0
[2,4,3,6,5,1] => 0
[2,4,5,1,3,6] => 2
[2,4,5,1,6,3] => 2
[2,4,5,3,1,6] => 0
[2,4,5,3,6,1] => 0
[2,4,5,6,1,3] => 2
[2,4,5,6,3,1] => 0
[2,4,6,1,3,5] => 6
[2,4,6,1,5,3] => 0
[2,4,6,3,1,5] => 0
[2,4,6,3,5,1] => 0
[2,4,6,5,1,3] => 0
[2,4,6,5,3,1] => 0
[2,5,1,3,4,6] => 6
[2,5,1,3,6,4] => 6
[2,5,1,4,3,6] => 0
[2,5,1,4,6,3] => 0
[2,5,1,6,3,4] => 6
[2,5,1,6,4,3] => 0
[2,5,3,1,4,6] => 0
[2,5,3,1,6,4] => 0
[2,5,3,4,1,6] => 0
[2,5,3,4,6,1] => 0
[2,5,3,6,1,4] => 0
[2,5,3,6,4,1] => 0
[2,5,4,1,3,6] => 0
[2,5,4,1,6,3] => 0
[2,5,4,3,1,6] => 0
[2,5,4,3,6,1] => 0
[2,5,4,6,1,3] => 0
[2,5,4,6,3,1] => 0
[2,5,6,1,3,4] => 6
[2,5,6,1,4,3] => 0
[2,5,6,3,1,4] => 0
[2,5,6,3,4,1] => 0
[2,5,6,4,1,3] => 0
[2,5,6,4,3,1] => 0
[2,6,1,3,4,5] => 24
[2,6,1,3,5,4] => 0
[2,6,1,4,3,5] => 0
[2,6,1,4,5,3] => 0
[2,6,1,5,3,4] => 0
[2,6,1,5,4,3] => 0
[2,6,3,1,4,5] => 0
[2,6,3,1,5,4] => 0
[2,6,3,4,1,5] => 0
[2,6,3,4,5,1] => 0
[2,6,3,5,1,4] => 0
[2,6,3,5,4,1] => 0
[2,6,4,1,3,5] => 0
[2,6,4,1,5,3] => 0
[2,6,4,3,1,5] => 0
[2,6,4,3,5,1] => 0
[2,6,4,5,1,3] => 0
[2,6,4,5,3,1] => 0
[2,6,5,1,3,4] => 0
[2,6,5,1,4,3] => 0
[2,6,5,3,1,4] => 0
[2,6,5,3,4,1] => 0
[2,6,5,4,1,3] => 0
[2,6,5,4,3,1] => 0
[3,1,2,4,5,6] => 2
[3,1,2,4,6,5] => 2
[3,1,2,5,4,6] => 2
[3,1,2,5,6,4] => 2
[3,1,2,6,4,5] => 4
[3,1,2,6,5,4] => 0
[3,1,4,2,5,6] => 2
[3,1,4,2,6,5] => 2
[3,1,4,5,2,6] => 2
[3,1,4,5,6,2] => 2
[3,1,4,6,2,5] => 4
[3,1,4,6,5,2] => 0
[3,1,5,2,4,6] => 4
[3,1,5,2,6,4] => 4
[3,1,5,4,2,6] => 0
[3,1,5,4,6,2] => 0
[3,1,5,6,2,4] => 4
[3,1,5,6,4,2] => 0
[3,1,6,2,4,5] => 12
[3,1,6,2,5,4] => 0
[3,1,6,4,2,5] => 0
[3,1,6,4,5,2] => 0
[3,1,6,5,2,4] => 0
[3,1,6,5,4,2] => 0
[3,2,1,4,5,6] => 0
[3,2,1,4,6,5] => 0
[3,2,1,5,4,6] => 0
[3,2,1,5,6,4] => 0
[3,2,1,6,4,5] => 0
[3,2,1,6,5,4] => 0
[3,2,4,1,5,6] => 0
[3,2,4,1,6,5] => 0
[3,2,4,5,1,6] => 0
[3,2,4,5,6,1] => 0
[3,2,4,6,1,5] => 0
[3,2,4,6,5,1] => 0
[3,2,5,1,4,6] => 0
[3,2,5,1,6,4] => 0
[3,2,5,4,1,6] => 0
[3,2,5,4,6,1] => 0
[3,2,5,6,1,4] => 0
[3,2,5,6,4,1] => 0
[3,2,6,1,4,5] => 0
[3,2,6,1,5,4] => 0
[3,2,6,4,1,5] => 0
[3,2,6,4,5,1] => 0
[3,2,6,5,1,4] => 0
[3,2,6,5,4,1] => 0
[3,4,1,2,5,6] => 2
[3,4,1,2,6,5] => 2
[3,4,1,5,2,6] => 2
[3,4,1,5,6,2] => 2
[3,4,1,6,2,5] => 4
[3,4,1,6,5,2] => 0
[3,4,2,1,5,6] => 0
[3,4,2,1,6,5] => 0
[3,4,2,5,1,6] => 0
[3,4,2,5,6,1] => 0
[3,4,2,6,1,5] => 0
[3,4,2,6,5,1] => 0
[3,4,5,1,2,6] => 2
[3,4,5,1,6,2] => 2
[3,4,5,2,1,6] => 0
[3,4,5,2,6,1] => 0
[3,4,5,6,1,2] => 2
[3,4,5,6,2,1] => 0
[3,4,6,1,2,5] => 6
[3,4,6,1,5,2] => 0
[3,4,6,2,1,5] => 0
[3,4,6,2,5,1] => 0
[3,4,6,5,1,2] => 0
[3,4,6,5,2,1] => 0
[3,5,1,2,4,6] => 6
[3,5,1,2,6,4] => 6
[3,5,1,4,2,6] => 0
[3,5,1,4,6,2] => 0
[3,5,1,6,2,4] => 6
[3,5,1,6,4,2] => 0
[3,5,2,1,4,6] => 0
[3,5,2,1,6,4] => 0
[3,5,2,4,1,6] => 0
[3,5,2,4,6,1] => 0
[3,5,2,6,1,4] => 0
[3,5,2,6,4,1] => 0
[3,5,4,1,2,6] => 0
[3,5,4,1,6,2] => 0
[3,5,4,2,1,6] => 0
[3,5,4,2,6,1] => 0
[3,5,4,6,1,2] => 0
[3,5,4,6,2,1] => 0
[3,5,6,1,2,4] => 6
[3,5,6,1,4,2] => 0
[3,5,6,2,1,4] => 0
[3,5,6,2,4,1] => 0
[3,5,6,4,1,2] => 0
[3,5,6,4,2,1] => 0
[3,6,1,2,4,5] => 24
[3,6,1,2,5,4] => 0
[3,6,1,4,2,5] => 0
[3,6,1,4,5,2] => 0
[3,6,1,5,2,4] => 0
[3,6,1,5,4,2] => 0
[3,6,2,1,4,5] => 0
[3,6,2,1,5,4] => 0
[3,6,2,4,1,5] => 0
[3,6,2,4,5,1] => 0
[3,6,2,5,1,4] => 0
[3,6,2,5,4,1] => 0
[3,6,4,1,2,5] => 0
[3,6,4,1,5,2] => 0
[3,6,4,2,1,5] => 0
[3,6,4,2,5,1] => 0
[3,6,4,5,1,2] => 0
[3,6,4,5,2,1] => 0
[3,6,5,1,2,4] => 0
[3,6,5,1,4,2] => 0
[3,6,5,2,1,4] => 0
[3,6,5,2,4,1] => 0
[3,6,5,4,1,2] => 0
[3,6,5,4,2,1] => 0
[4,1,2,3,5,6] => 6
[4,1,2,3,6,5] => 6
[4,1,2,5,3,6] => 6
[4,1,2,5,6,3] => 6
[4,1,2,6,3,5] => 12
[4,1,2,6,5,3] => 0
[4,1,3,2,5,6] => 0
[4,1,3,2,6,5] => 0
[4,1,3,5,2,6] => 0
[4,1,3,5,6,2] => 0
[4,1,3,6,2,5] => 0
[4,1,3,6,5,2] => 0
[4,1,5,2,3,6] => 6
[4,1,5,2,6,3] => 6
[4,1,5,3,2,6] => 0
[4,1,5,3,6,2] => 0
[4,1,5,6,2,3] => 6
[4,1,5,6,3,2] => 0
[4,1,6,2,3,5] => 18
[4,1,6,2,5,3] => 0
[4,1,6,3,2,5] => 0
[4,1,6,3,5,2] => 0
[4,1,6,5,2,3] => 0
[4,1,6,5,3,2] => 0
[4,2,1,3,5,6] => 0
[4,2,1,3,6,5] => 0
[4,2,1,5,3,6] => 0
[4,2,1,5,6,3] => 0
[4,2,1,6,3,5] => 0
[4,2,1,6,5,3] => 0
[4,2,3,1,5,6] => 0
[4,2,3,1,6,5] => 0
[4,2,3,5,1,6] => 0
[4,2,3,5,6,1] => 0
[4,2,3,6,1,5] => 0
[4,2,3,6,5,1] => 0
[4,2,5,1,3,6] => 0
[4,2,5,1,6,3] => 0
[4,2,5,3,1,6] => 0
[4,2,5,3,6,1] => 0
[4,2,5,6,1,3] => 0
[4,2,5,6,3,1] => 0
[4,2,6,1,3,5] => 0
[4,2,6,1,5,3] => 0
[4,2,6,3,1,5] => 0
[4,2,6,3,5,1] => 0
[4,2,6,5,1,3] => 0
[4,2,6,5,3,1] => 0
[4,3,1,2,5,6] => 0
[4,3,1,2,6,5] => 0
[4,3,1,5,2,6] => 0
[4,3,1,5,6,2] => 0
[4,3,1,6,2,5] => 0
[4,3,1,6,5,2] => 0
[4,3,2,1,5,6] => 0
[4,3,2,1,6,5] => 0
[4,3,2,5,1,6] => 0
[4,3,2,5,6,1] => 0
[4,3,2,6,1,5] => 0
[4,3,2,6,5,1] => 0
[4,3,5,1,2,6] => 0
[4,3,5,1,6,2] => 0
[4,3,5,2,1,6] => 0
[4,3,5,2,6,1] => 0
[4,3,5,6,1,2] => 0
[4,3,5,6,2,1] => 0
[4,3,6,1,2,5] => 0
[4,3,6,1,5,2] => 0
[4,3,6,2,1,5] => 0
[4,3,6,2,5,1] => 0
[4,3,6,5,1,2] => 0
[4,3,6,5,2,1] => 0
[4,5,1,2,3,6] => 6
[4,5,1,2,6,3] => 6
[4,5,1,3,2,6] => 0
[4,5,1,3,6,2] => 0
[4,5,1,6,2,3] => 6
[4,5,1,6,3,2] => 0
[4,5,2,1,3,6] => 0
[4,5,2,1,6,3] => 0
[4,5,2,3,1,6] => 0
[4,5,2,3,6,1] => 0
[4,5,2,6,1,3] => 0
[4,5,2,6,3,1] => 0
[4,5,3,1,2,6] => 0
[4,5,3,1,6,2] => 0
[4,5,3,2,1,6] => 0
[4,5,3,2,6,1] => 0
[4,5,3,6,1,2] => 0
[4,5,3,6,2,1] => 0
[4,5,6,1,2,3] => 6
[4,5,6,1,3,2] => 0
[4,5,6,2,1,3] => 0
[4,5,6,2,3,1] => 0
[4,5,6,3,1,2] => 0
[4,5,6,3,2,1] => 0
[4,6,1,2,3,5] => 24
[4,6,1,2,5,3] => 0
[4,6,1,3,2,5] => 0
[4,6,1,3,5,2] => 0
[4,6,1,5,2,3] => 0
[4,6,1,5,3,2] => 0
[4,6,2,1,3,5] => 0
[4,6,2,1,5,3] => 0
[4,6,2,3,1,5] => 0
[4,6,2,3,5,1] => 0
[4,6,2,5,1,3] => 0
[4,6,2,5,3,1] => 0
[4,6,3,1,2,5] => 0
[4,6,3,1,5,2] => 0
[4,6,3,2,1,5] => 0
[4,6,3,2,5,1] => 0
[4,6,3,5,1,2] => 0
[4,6,3,5,2,1] => 0
[4,6,5,1,2,3] => 0
[4,6,5,1,3,2] => 0
[4,6,5,2,1,3] => 0
[4,6,5,2,3,1] => 0
[4,6,5,3,1,2] => 0
[4,6,5,3,2,1] => 0
[5,1,2,3,4,6] => 24
[5,1,2,3,6,4] => 24
[5,1,2,4,3,6] => 0
[5,1,2,4,6,3] => 0
[5,1,2,6,3,4] => 24
[5,1,2,6,4,3] => 0
[5,1,3,2,4,6] => 0
[5,1,3,2,6,4] => 0
[5,1,3,4,2,6] => 0
[5,1,3,4,6,2] => 0
[5,1,3,6,2,4] => 0
[5,1,3,6,4,2] => 0
[5,1,4,2,3,6] => 0
[5,1,4,2,6,3] => 0
[5,1,4,3,2,6] => 0
[5,1,4,3,6,2] => 0
[5,1,4,6,2,3] => 0
[5,1,4,6,3,2] => 0
[5,1,6,2,3,4] => 24
[5,1,6,2,4,3] => 0
[5,1,6,3,2,4] => 0
[5,1,6,3,4,2] => 0
[5,1,6,4,2,3] => 0
[5,1,6,4,3,2] => 0
[5,2,1,3,4,6] => 0
[5,2,1,3,6,4] => 0
[5,2,1,4,3,6] => 0
[5,2,1,4,6,3] => 0
[5,2,1,6,3,4] => 0
[5,2,1,6,4,3] => 0
[5,2,3,1,4,6] => 0
[5,2,3,1,6,4] => 0
[5,2,3,4,1,6] => 0
[5,2,3,4,6,1] => 0
[5,2,3,6,1,4] => 0
[5,2,3,6,4,1] => 0
[5,2,4,1,3,6] => 0
[5,2,4,1,6,3] => 0
[5,2,4,3,1,6] => 0
[5,2,4,3,6,1] => 0
[5,2,4,6,1,3] => 0
[5,2,4,6,3,1] => 0
[5,2,6,1,3,4] => 0
[5,2,6,1,4,3] => 0
[5,2,6,3,1,4] => 0
[5,2,6,3,4,1] => 0
[5,2,6,4,1,3] => 0
[5,2,6,4,3,1] => 0
[5,3,1,2,4,6] => 0
[5,3,1,2,6,4] => 0
[5,3,1,4,2,6] => 0
[5,3,1,4,6,2] => 0
[5,3,1,6,2,4] => 0
[5,3,1,6,4,2] => 0
[5,3,2,1,4,6] => 0
[5,3,2,1,6,4] => 0
[5,3,2,4,1,6] => 0
[5,3,2,4,6,1] => 0
[5,3,2,6,1,4] => 0
[5,3,2,6,4,1] => 0
[5,3,4,1,2,6] => 0
[5,3,4,1,6,2] => 0
[5,3,4,2,1,6] => 0
[5,3,4,2,6,1] => 0
[5,3,4,6,1,2] => 0
[5,3,4,6,2,1] => 0
[5,3,6,1,2,4] => 0
[5,3,6,1,4,2] => 0
[5,3,6,2,1,4] => 0
[5,3,6,2,4,1] => 0
[5,3,6,4,1,2] => 0
[5,3,6,4,2,1] => 0
[5,4,1,2,3,6] => 0
[5,4,1,2,6,3] => 0
[5,4,1,3,2,6] => 0
[5,4,1,3,6,2] => 0
[5,4,1,6,2,3] => 0
[5,4,1,6,3,2] => 0
[5,4,2,1,3,6] => 0
[5,4,2,1,6,3] => 0
[5,4,2,3,1,6] => 0
[5,4,2,3,6,1] => 0
[5,4,2,6,1,3] => 0
[5,4,2,6,3,1] => 0
[5,4,3,1,2,6] => 0
[5,4,3,1,6,2] => 0
[5,4,3,2,1,6] => 0
[5,4,3,2,6,1] => 0
[5,4,3,6,1,2] => 0
[5,4,3,6,2,1] => 0
[5,4,6,1,2,3] => 0
[5,4,6,1,3,2] => 0
[5,4,6,2,1,3] => 0
[5,4,6,2,3,1] => 0
[5,4,6,3,1,2] => 0
[5,4,6,3,2,1] => 0
[5,6,1,2,3,4] => 24
[5,6,1,2,4,3] => 0
[5,6,1,3,2,4] => 0
[5,6,1,3,4,2] => 0
[5,6,1,4,2,3] => 0
[5,6,1,4,3,2] => 0
[5,6,2,1,3,4] => 0
[5,6,2,1,4,3] => 0
[5,6,2,3,1,4] => 0
[5,6,2,3,4,1] => 0
[5,6,2,4,1,3] => 0
[5,6,2,4,3,1] => 0
[5,6,3,1,2,4] => 0
[5,6,3,1,4,2] => 0
[5,6,3,2,1,4] => 0
[5,6,3,2,4,1] => 0
[5,6,3,4,1,2] => 0
[5,6,3,4,2,1] => 0
[5,6,4,1,2,3] => 0
[5,6,4,1,3,2] => 0
[5,6,4,2,1,3] => 0
[5,6,4,2,3,1] => 0
[5,6,4,3,1,2] => 0
[5,6,4,3,2,1] => 0
[6,1,2,3,4,5] => 120
[6,1,2,3,5,4] => 0
[6,1,2,4,3,5] => 0
[6,1,2,4,5,3] => 0
[6,1,2,5,3,4] => 0
[6,1,2,5,4,3] => 0
[6,1,3,2,4,5] => 0
[6,1,3,2,5,4] => 0
[6,1,3,4,2,5] => 0
[6,1,3,4,5,2] => 0
[6,1,3,5,2,4] => 0
[6,1,3,5,4,2] => 0
[6,1,4,2,3,5] => 0
[6,1,4,2,5,3] => 0
[6,1,4,3,2,5] => 0
[6,1,4,3,5,2] => 0
[6,1,4,5,2,3] => 0
[6,1,4,5,3,2] => 0
[6,1,5,2,3,4] => 0
[6,1,5,2,4,3] => 0
[6,1,5,3,2,4] => 0
[6,1,5,3,4,2] => 0
[6,1,5,4,2,3] => 0
[6,1,5,4,3,2] => 0
[6,2,1,3,4,5] => 0
[6,2,1,3,5,4] => 0
[6,2,1,4,3,5] => 0
[6,2,1,4,5,3] => 0
[6,2,1,5,3,4] => 0
[6,2,1,5,4,3] => 0
[6,2,3,1,4,5] => 0
[6,2,3,1,5,4] => 0
[6,2,3,4,1,5] => 0
[6,2,3,4,5,1] => 0
[6,2,3,5,1,4] => 0
[6,2,3,5,4,1] => 0
[6,2,4,1,3,5] => 0
[6,2,4,1,5,3] => 0
[6,2,4,3,1,5] => 0
[6,2,4,3,5,1] => 0
[6,2,4,5,1,3] => 0
[6,2,4,5,3,1] => 0
[6,2,5,1,3,4] => 0
[6,2,5,1,4,3] => 0
[6,2,5,3,1,4] => 0
[6,2,5,3,4,1] => 0
[6,2,5,4,1,3] => 0
[6,2,5,4,3,1] => 0
[6,3,1,2,4,5] => 0
[6,3,1,2,5,4] => 0
[6,3,1,4,2,5] => 0
[6,3,1,4,5,2] => 0
[6,3,1,5,2,4] => 0
[6,3,1,5,4,2] => 0
[6,3,2,1,4,5] => 0
[6,3,2,1,5,4] => 0
[6,3,2,4,1,5] => 0
[6,3,2,4,5,1] => 0
[6,3,2,5,1,4] => 0
[6,3,2,5,4,1] => 0
[6,3,4,1,2,5] => 0
[6,3,4,1,5,2] => 0
[6,3,4,2,1,5] => 0
[6,3,4,2,5,1] => 0
[6,3,4,5,1,2] => 0
[6,3,4,5,2,1] => 0
[6,3,5,1,2,4] => 0
[6,3,5,1,4,2] => 0
[6,3,5,2,1,4] => 0
[6,3,5,2,4,1] => 0
[6,3,5,4,1,2] => 0
[6,3,5,4,2,1] => 0
[6,4,1,2,3,5] => 0
[6,4,1,2,5,3] => 0
[6,4,1,3,2,5] => 0
[6,4,1,3,5,2] => 0
[6,4,1,5,2,3] => 0
[6,4,1,5,3,2] => 0
[6,4,2,1,3,5] => 0
[6,4,2,1,5,3] => 0
[6,4,2,3,1,5] => 0
[6,4,2,3,5,1] => 0
[6,4,2,5,1,3] => 0
[6,4,2,5,3,1] => 0
[6,4,3,1,2,5] => 0
[6,4,3,1,5,2] => 0
[6,4,3,2,1,5] => 0
[6,4,3,2,5,1] => 0
[6,4,3,5,1,2] => 0
[6,4,3,5,2,1] => 0
[6,4,5,1,2,3] => 0
[6,4,5,1,3,2] => 0
[6,4,5,2,1,3] => 0
[6,4,5,2,3,1] => 0
[6,4,5,3,1,2] => 0
[6,4,5,3,2,1] => 0
[6,5,1,2,3,4] => 0
[6,5,1,2,4,3] => 0
[6,5,1,3,2,4] => 0
[6,5,1,3,4,2] => 0
[6,5,1,4,2,3] => 0
[6,5,1,4,3,2] => 0
[6,5,2,1,3,4] => 0
[6,5,2,1,4,3] => 0
[6,5,2,3,1,4] => 0
[6,5,2,3,4,1] => 0
[6,5,2,4,1,3] => 0
[6,5,2,4,3,1] => 0
[6,5,3,1,2,4] => 0
[6,5,3,1,4,2] => 0
[6,5,3,2,1,4] => 0
[6,5,3,2,4,1] => 0
[6,5,3,4,1,2] => 0
[6,5,3,4,2,1] => 0
[6,5,4,1,2,3] => 0
[6,5,4,1,3,2] => 0
[6,5,4,2,1,3] => 0
[6,5,4,2,3,1] => 0
[6,5,4,3,1,2] => 0
[6,5,4,3,2,1] => 0
[1,2,3,4,5,6,7] => 1
[1,2,3,4,5,7,6] => 1
[1,2,3,4,6,5,7] => 1
[1,2,3,6,4,7,5] => 2
[1,2,6,3,4,7,5] => 6
[1,3,2,4,5,6,7] => 1
[1,3,7,2,4,5,6] => 24
[1,3,7,6,5,4,2] => 0
[1,4,6,7,2,3,5] => 6
[1,4,6,7,5,3,2] => 0
[1,4,7,2,3,5,6] => 24
[1,4,7,6,5,3,2] => 0
[1,5,2,3,4,7,6] => 6
[1,5,2,7,3,4,6] => 18
[1,5,4,7,6,3,2] => 0
[1,5,6,2,7,3,4] => 6
[1,5,6,4,7,3,2] => 0
[1,5,6,7,2,3,4] => 6
[1,5,6,7,4,3,2] => 0
[1,5,7,2,3,4,6] => 24
[1,5,7,6,4,3,2] => 0
[1,6,2,3,4,7,5] => 24
[1,6,2,3,7,4,5] => 24
[1,6,2,7,3,4,5] => 24
[1,6,5,4,3,7,2] => 0
[1,6,5,4,7,3,2] => 0
[1,6,5,7,4,3,2] => 0
[1,6,7,2,3,4,5] => 24
[1,6,7,5,4,3,2] => 0
[1,7,2,3,4,5,6] => 120
[1,7,3,5,6,4,2] => 0
[1,7,3,6,5,4,2] => 0
[1,7,4,3,6,5,2] => 0
[1,7,4,5,3,6,2] => 0
[1,7,4,5,6,3,2] => 0
[1,7,4,6,5,3,2] => 0
[1,7,5,4,3,6,2] => 0
[1,7,5,4,6,3,2] => 0
[1,7,6,4,5,3,2] => 0
[1,7,6,5,4,3,2] => 0
[2,1,3,4,5,6,7] => 1
[2,1,3,4,7,5,6] => 2
[2,1,3,7,4,5,6] => 6
[2,1,6,3,4,5,7] => 6
[2,1,7,3,4,5,6] => 24
[2,1,7,6,5,4,3] => 0
[2,3,1,4,5,6,7] => 1
[2,3,4,1,5,6,7] => 1
[2,3,4,1,5,7,6] => 1
[2,3,4,5,1,6,7] => 1
[2,3,4,5,1,7,6] => 1
[2,3,4,5,6,1,7] => 1
[2,3,4,5,6,7,1] => 1
[2,3,4,5,7,1,6] => 2
[2,3,4,6,1,7,5] => 2
[2,3,4,6,7,1,5] => 2
[2,3,4,7,1,5,6] => 6
[2,3,5,6,7,1,4] => 2
[2,4,1,3,5,6,7] => 2
[2,5,1,3,4,6,7] => 6
[2,5,7,1,3,4,6] => 24
[2,6,1,3,4,5,7] => 24
[2,6,1,7,3,4,5] => 24
[2,6,5,4,3,1,7] => 0
[2,6,7,1,3,4,5] => 24
[2,7,1,3,4,5,6] => 120
[3,1,2,4,5,6,7] => 2
[3,1,2,4,5,7,6] => 2
[3,2,1,4,5,6,7] => 0
[3,2,4,5,6,7,1] => 0
[3,4,1,2,5,6,7] => 2
[3,4,2,5,6,7,1] => 0
[3,4,5,2,6,7,1] => 0
[3,4,5,6,2,7,1] => 0
[3,4,5,6,7,1,2] => 2
[3,5,6,1,2,4,7] => 6
[3,5,6,4,2,1,7] => 0
[3,6,1,2,4,5,7] => 24
[3,6,5,4,2,1,7] => 0
[4,1,2,3,5,6,7] => 6
[4,1,2,3,5,7,6] => 6
[4,1,6,2,3,5,7] => 18
[4,2,3,5,6,7,1] => 0
[4,2,5,1,3,6,7] => 0
[4,3,2,1,5,6,7] => 0
[4,3,2,5,6,7,1] => 0
[4,3,5,2,6,7,1] => 0
[4,3,6,5,2,1,7] => 0
[4,5,1,6,2,3,7] => 6
[4,5,2,3,6,7,1] => 0
[4,5,3,6,2,1,7] => 0
[4,5,6,1,2,3,7] => 6
[4,5,6,3,2,1,7] => 0
[4,6,1,2,3,5,7] => 24
[4,6,1,2,3,7,5] => 24
[4,6,5,3,2,1,7] => 0
[5,1,2,3,4,6,7] => 24
[5,1,2,3,4,7,6] => 24
[5,1,2,3,6,4,7] => 24
[5,1,2,3,6,7,4] => 24
[5,1,2,3,7,4,6] => 48
[5,1,2,6,3,4,7] => 24
[5,1,6,2,3,4,7] => 24
[5,1,6,2,3,7,4] => 24
[5,2,3,4,6,7,1] => 0
[5,2,6,7,1,3,4] => 0
[5,3,2,4,6,7,1] => 0
[5,3,2,6,1,4,7] => 0
[5,3,6,7,1,2,4] => 0
[5,4,3,2,1,6,7] => 0
[5,4,3,2,1,7,6] => 0
[5,4,3,2,6,1,7] => 0
[5,4,3,6,2,1,7] => 0
[5,4,6,3,2,1,7] => 0
[5,4,6,7,1,2,3] => 0
[5,6,1,2,3,4,7] => 24
[5,6,1,2,3,7,4] => 24
[5,6,3,4,1,2,7] => 0
[5,6,4,3,2,1,7] => 0
[5,6,7,1,2,3,4] => 24
[6,1,2,3,4,5,7] => 120
[6,1,2,3,4,7,5] => 120
[6,1,2,3,7,4,5] => 120
[6,1,2,7,3,4,5] => 120
[6,2,3,4,5,7,1] => 0
[6,2,4,5,3,1,7] => 0
[6,2,5,4,3,1,7] => 0
[6,3,2,5,4,1,7] => 0
[6,3,4,2,5,1,7] => 0
[6,3,4,5,2,1,7] => 0
[6,3,4,7,1,2,5] => 0
[6,3,5,4,2,1,7] => 0
[6,4,3,2,5,1,7] => 0
[6,4,3,2,7,1,5] => 0
[6,4,3,5,2,1,7] => 0
[6,4,5,7,1,2,3] => 0
[6,4,7,2,5,1,3] => 0
[6,4,7,3,5,1,2] => 0
[6,5,3,4,2,1,7] => 0
[6,5,4,3,2,1,7] => 0
[6,5,7,3,4,1,2] => 0
[6,7,1,2,3,4,5] => 120
[6,7,3,4,1,2,5] => 0
[6,7,4,5,1,2,3] => 0
[7,1,2,3,4,5,6] => 720
[7,2,1,3,4,5,6] => 0
[7,2,3,1,4,5,6] => 0
[7,2,3,4,1,5,6] => 0
[7,2,3,4,5,1,6] => 0
[7,3,1,2,4,5,6] => 0
[7,3,2,1,4,5,6] => 0
[7,3,2,4,1,5,6] => 0
[7,3,4,1,2,5,6] => 0
[7,4,1,2,3,5,6] => 0
[7,4,2,1,3,5,6] => 0
[7,4,5,6,1,2,3] => 0
[7,5,1,2,3,4,6] => 0
[7,5,6,1,2,3,4] => 0
[7,5,6,3,4,1,2] => 0
[7,6,1,2,3,4,5] => 0
[7,6,4,5,1,2,3] => 0
[7,6,4,5,3,2,1] => 0
[7,6,5,1,2,3,4] => 0
[7,6,5,3,4,1,2] => 0
[7,6,5,4,1,2,3] => 0
[7,6,5,4,3,1,2] => 0
[7,6,5,4,3,2,1] => 0
[8,7,6,5,4,3,2,1] => 0
[7,6,8,5,4,3,2,1] => 0
[7,8,5,6,4,3,2,1] => 0
[7,8,6,4,5,3,2,1] => 0
[8,6,7,4,5,3,2,1] => 0
[7,6,5,4,8,3,2,1] => 0
[6,5,7,4,8,3,2,1] => 0
[7,8,6,5,3,4,2,1] => 0
[8,6,7,5,3,4,2,1] => 0
[8,7,5,6,3,4,2,1] => 0
[6,7,8,3,4,5,2,1] => 0
[7,8,6,5,4,2,3,1] => 0
[8,6,7,5,4,2,3,1] => 0
[8,7,5,6,4,2,3,1] => 0
[8,7,6,4,5,2,3,1] => 0
[8,6,5,7,3,2,4,1] => 0
[6,7,8,5,2,3,4,1] => 0
[8,5,6,7,2,3,4,1] => 0
[7,8,3,2,4,5,6,1] => 0
[7,6,5,4,3,2,8,1] => 0
[6,5,7,4,3,2,8,1] => 0
[6,5,4,3,7,2,8,1] => 0
[5,4,6,3,7,2,8,1] => 0
[3,4,5,2,6,7,8,1] => 0
[5,2,3,4,6,7,8,1] => 0
[4,3,2,5,6,7,8,1] => 0
[3,4,2,5,6,7,8,1] => 0
[4,2,3,5,6,7,8,1] => 0
[3,2,4,5,6,7,8,1] => 0
[2,3,4,5,6,7,8,1] => 1
[8,7,6,5,4,3,1,2] => 0
[7,8,6,5,4,3,1,2] => 0
[8,6,7,5,4,3,1,2] => 0
[8,7,5,6,4,3,1,2] => 0
[8,7,6,4,5,3,1,2] => 0
[8,7,6,5,3,4,1,2] => 0
[8,7,5,6,3,4,1,2] => 0
[7,8,5,6,3,4,1,2] => 0
[5,6,7,8,3,4,1,2] => 0
[7,8,3,4,5,6,1,2] => 0
[3,4,5,6,7,8,1,2] => 2
[8,7,6,5,4,2,1,3] => 0
[7,6,8,5,4,2,1,3] => 0
[8,7,6,5,4,1,2,3] => 0
[6,7,8,5,4,1,2,3] => 0
[8,5,6,7,4,1,2,3] => 0
[8,7,6,4,5,1,2,3] => 0
[8,6,7,4,5,1,2,3] => 0
[8,7,4,5,6,1,2,3] => 0
[7,8,4,5,6,1,2,3] => 0
[6,7,4,5,8,1,2,3] => 0
[7,6,5,8,3,2,1,4] => 0
[7,5,6,8,2,3,1,4] => 0
[6,7,5,8,3,1,2,4] => 0
[6,5,7,8,2,1,3,4] => 0
[8,7,6,5,1,2,3,4] => 0
[8,7,5,6,1,2,3,4] => 0
[7,8,5,6,1,2,3,4] => 0
[8,5,6,7,1,2,3,4] => 0
[5,6,7,8,1,2,3,4] => 24
[8,7,6,4,3,2,1,5] => 0
[8,7,6,4,2,1,3,5] => 0
[8,7,6,1,2,3,4,5] => 0
[8,6,7,1,2,3,4,5] => 0
[6,7,8,1,2,3,4,5] => 120
[7,8,5,4,2,1,3,6] => 0
[7,8,5,4,1,2,3,6] => 0
[8,7,1,2,3,4,5,6] => 0
[7,8,1,2,3,4,5,6] => 720
[8,6,5,4,3,2,1,7] => 0
[8,6,5,4,3,1,2,7] => 0
[8,5,6,3,4,1,2,7] => 0
[8,6,5,4,2,1,3,7] => 0
[8,6,4,3,2,1,5,7] => 0
[8,6,4,2,1,3,5,7] => 0
[8,2,3,4,1,5,6,7] => 0
[8,4,1,2,3,5,6,7] => 0
[8,3,2,1,4,5,6,7] => 0
[8,2,3,1,4,5,6,7] => 0
[8,3,1,2,4,5,6,7] => 0
[8,2,1,3,4,5,6,7] => 0
[8,1,2,3,4,5,6,7] => 5040
[7,6,5,4,3,2,1,8] => 0
[6,7,5,4,3,2,1,8] => 0
[6,5,7,4,3,2,1,8] => 0
[5,6,7,4,3,2,1,8] => 0
[7,6,4,5,3,2,1,8] => 0
[6,5,4,7,3,2,1,8] => 0
[7,5,6,3,4,2,1,8] => 0
[7,6,4,3,5,2,1,8] => 0
[7,6,3,4,5,2,1,8] => 0
[7,5,4,3,6,2,1,8] => 0
[6,7,5,4,2,3,1,8] => 0
[6,5,7,3,2,4,1,8] => 0
[5,6,7,2,3,4,1,8] => 0
[2,3,4,5,6,7,1,8] => 1
[5,6,7,1,2,3,4,8] => 24
[6,7,1,2,3,4,5,8] => 120
[7,1,2,3,4,5,6,8] => 720
[6,5,4,3,2,1,7,8] => 0
[2,3,4,5,6,1,7,8] => 1
[5,6,3,4,1,2,7,8] => 0
[4,5,6,1,2,3,7,8] => 6
[6,1,2,3,4,5,7,8] => 120
[5,4,3,2,1,6,7,8] => 0
[2,3,4,5,1,6,7,8] => 1
[5,1,2,3,4,6,7,8] => 24
[4,3,2,1,5,6,7,8] => 0
[3,4,1,2,5,6,7,8] => 2
[3,2,1,4,5,6,7,8] => 0
[2,1,3,4,5,6,7,8] => 1
[1,2,3,4,5,6,7,8] => 1
[6,5,8,7,4,3,2,1] => 0
[3,5,8,7,6,4,2,1] => 0
[4,3,6,5,8,7,2,1] => 0
[2,6,8,7,5,4,3,1] => 0
[2,3,5,6,8,7,4,1] => 0
[3,2,6,5,4,8,7,1] => 0
[4,3,6,5,7,2,8,1] => 0
[3,2,6,5,7,4,8,1] => 0
[4,3,5,2,7,6,8,1] => 0
[3,2,5,4,7,6,8,1] => 0
[1,8,7,6,5,4,3,2] => 0
[1,7,8,6,5,4,3,2] => 0
[1,6,8,7,5,4,3,2] => 0
[1,7,6,8,5,4,3,2] => 0
[1,6,7,8,5,4,3,2] => 0
[1,5,8,7,6,4,3,2] => 0
[1,7,6,5,8,4,3,2] => 0
[1,3,5,7,8,6,4,2] => 0
[1,4,3,8,7,6,5,2] => 0
[1,6,5,4,3,8,7,2] => 0
[1,4,3,6,5,8,7,2] => 0
[2,1,8,7,6,5,4,3] => 0
[2,1,6,5,7,4,8,3] => 0
[2,1,5,4,7,6,8,3] => 0
[1,2,6,7,8,5,4,3] => 0
[3,2,1,8,7,6,5,4] => 0
[3,2,1,6,5,8,7,4] => 0
[1,2,3,5,6,7,8,4] => 1
[4,3,2,1,8,7,6,5] => 0
[3,4,2,1,7,8,6,5] => 0
[2,4,3,1,6,8,7,5] => 0
[2,4,3,1,7,6,8,5] => 0
[3,2,4,1,6,8,7,5] => 0
[3,2,4,1,7,6,8,5] => 0
[2,3,4,1,6,7,8,5] => 1
[2,1,4,3,8,7,6,5] => 0
[2,1,4,3,6,8,7,5] => 0
[2,1,4,3,7,6,8,5] => 0
[5,4,3,2,1,8,7,6] => 0
[3,2,5,4,1,8,7,6] => 0
[3,2,1,4,5,8,7,6] => 0
[2,3,1,4,5,7,8,6] => 1
[6,5,4,3,2,1,8,7] => 0
[4,3,5,2,6,1,8,7] => 0
[3,2,5,4,6,1,8,7] => 0
[2,3,4,5,6,1,8,7] => 1
[2,1,6,5,4,3,8,7] => 0
[2,1,4,6,5,3,8,7] => 0
[2,1,5,4,6,3,8,7] => 0
[4,3,2,1,6,5,8,7] => 0
[2,4,3,1,6,5,8,7] => 0
[3,2,4,1,6,5,8,7] => 0
[2,1,4,3,6,5,8,7] => 1
[2,1,3,4,5,6,8,7] => 1
[1,2,3,4,5,6,8,7] => 1
[5,7,6,4,3,2,1,8] => 0
[4,7,6,5,3,2,1,8] => 0
[3,2,7,6,5,4,1,8] => 0
[5,4,3,2,7,6,1,8] => 0
[3,2,5,4,7,6,1,8] => 0
[1,4,3,2,7,6,5,8] => 0
[1,3,4,2,6,7,5,8] => 1
[1,3,2,5,4,7,6,8] => 1
[1,2,3,5,4,7,6,8] => 1
[1,3,2,4,5,7,6,8] => 1
[1,2,3,4,5,7,6,8] => 1
[1,2,4,3,6,5,7,8] => 1
[1,3,2,5,4,6,7,8] => 1
[1,2,3,5,4,6,7,8] => 1
[1,3,2,4,5,6,7,8] => 1
[1,8,4,7,6,5,3,2] => 0
[1,8,5,4,7,6,3,2] => 0
[1,8,7,4,5,6,3,2] => 0
[1,8,7,4,6,5,3,2] => 0
[1,8,6,5,4,7,3,2] => 0
[1,8,7,5,4,6,3,2] => 0
[1,8,7,5,6,4,3,2] => 0
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Description
The cardinality of the preimage of the Simion-Schmidt map.
The Simion-Schmidt bijection transforms a [3,1,2]-avoiding permutation into a [3,2,1]-avoiding permutation. More generally, it can be thought of as a map S that turns any permutation into a [3,2,1]-avoiding permutation. This statistic is the size of S−1(π) for each permutation π.
The map S can also be realized using the quotient of the 0-Hecke Monoid of the symmetric group by the relation πiπi+1πi=πi+1πi, sending each element of the fiber of the quotient to the unique [3,2,1]-avoiding element in that fiber.
References
[1] Bóna, Miklós Combinatorics of permutations MathSciNet:2919720
Code
def statistic(x):
    return sum(1 for pi in Permutations(x.size()) if pi.simion_schmidt([3,2,1]) == x)
Created
Jun 18, 2013 at 18:08 by Tom Denton
Updated
Mar 17, 2018 at 16:36 by Martin Rubey