Identifier
Values
[1] => [1] => [1] => [1] => 0
[1,2] => [1,2] => [1,2] => [1,2] => 0
[2,1] => [2,1] => [2,1] => [2,1] => 0
[1,2,3] => [1,2,3] => [1,3,2] => [1,3,2] => 0
[1,3,2] => [1,3,2] => [1,3,2] => [1,3,2] => 0
[2,1,3] => [2,1,3] => [2,1,3] => [2,1,3] => 1
[2,3,1] => [1,3,2] => [1,3,2] => [1,3,2] => 0
[3,1,2] => [3,1,2] => [3,1,2] => [3,1,2] => 0
[3,2,1] => [3,2,1] => [3,2,1] => [3,2,1] => 0
[1,2,3,4] => [1,2,3,4] => [1,4,3,2] => [1,4,3,2] => 0
[1,2,4,3] => [1,2,4,3] => [1,4,3,2] => [1,4,3,2] => 0
[1,3,2,4] => [1,3,2,4] => [1,4,3,2] => [1,4,3,2] => 0
[1,3,4,2] => [1,2,4,3] => [1,4,3,2] => [1,4,3,2] => 0
[1,4,2,3] => [1,4,2,3] => [1,4,3,2] => [1,4,3,2] => 0
[1,4,3,2] => [1,4,3,2] => [1,4,3,2] => [1,4,3,2] => 0
[2,1,3,4] => [2,1,3,4] => [2,1,4,3] => [2,1,4,3] => 1
[2,1,4,3] => [2,1,4,3] => [2,1,4,3] => [2,1,4,3] => 1
[2,3,1,4] => [1,3,2,4] => [1,4,3,2] => [1,4,3,2] => 0
[2,3,4,1] => [1,2,4,3] => [1,4,3,2] => [1,4,3,2] => 0
[2,4,1,3] => [2,4,1,3] => [2,4,1,3] => [2,4,1,3] => 0
[2,4,3,1] => [1,4,3,2] => [1,4,3,2] => [1,4,3,2] => 0
[3,1,2,4] => [3,1,2,4] => [3,1,4,2] => [3,1,4,2] => 1
[3,1,4,2] => [2,1,4,3] => [2,1,4,3] => [2,1,4,3] => 1
[3,2,1,4] => [3,2,1,4] => [3,2,1,4] => [3,2,1,4] => 1
[3,2,4,1] => [2,1,4,3] => [2,1,4,3] => [2,1,4,3] => 1
[3,4,1,2] => [2,4,1,3] => [2,4,1,3] => [2,4,1,3] => 0
[3,4,2,1] => [1,4,3,2] => [1,4,3,2] => [1,4,3,2] => 0
[4,1,2,3] => [4,1,2,3] => [4,1,3,2] => [4,1,3,2] => 1
[4,1,3,2] => [4,1,3,2] => [4,1,3,2] => [4,1,3,2] => 1
[4,2,1,3] => [4,2,1,3] => [4,2,1,3] => [4,2,1,3] => 0
[4,2,3,1] => [4,1,3,2] => [4,1,3,2] => [4,1,3,2] => 1
[4,3,1,2] => [4,3,1,2] => [4,3,1,2] => [4,3,1,2] => 0
[4,3,2,1] => [4,3,2,1] => [4,3,2,1] => [4,3,2,1] => 0
[1,2,3,4,5] => [1,2,3,4,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,2,3,5,4] => [1,2,3,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,2,4,3,5] => [1,2,4,3,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,2,4,5,3] => [1,2,3,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,2,5,3,4] => [1,2,5,3,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,2,5,4,3] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,2,4,5] => [1,3,2,4,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,2,5,4] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,4,2,5] => [1,2,4,3,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,4,5,2] => [1,2,3,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,5,2,4] => [1,3,5,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,3,5,4,2] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,2,3,5] => [1,4,2,3,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,2,5,3] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,3,2,5] => [1,4,3,2,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,3,5,2] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,5,2,3] => [1,3,5,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,4,5,3,2] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,2,3,4] => [1,5,2,3,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,2,4,3] => [1,5,2,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,3,2,4] => [1,5,3,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,3,4,2] => [1,5,2,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,4,2,3] => [1,5,4,2,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[1,5,4,3,2] => [1,5,4,3,2] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,1,4,5] => [1,3,2,4,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,1,5,4] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,4,1,5] => [1,2,4,3,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,4,5,1] => [1,2,3,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,5,1,4] => [1,3,5,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,3,5,4,1] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,4,1,5,3] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,4,3,1,5] => [1,4,3,2,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,4,3,5,1] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,4,5,1,3] => [1,3,5,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,4,5,3,1] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,5,3,1,4] => [1,5,3,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,5,3,4,1] => [1,5,2,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[2,5,4,3,1] => [1,5,4,3,2] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,4,1,5,2] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,4,2,1,5] => [1,4,3,2,5] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,4,2,5,1] => [1,3,2,5,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,4,5,1,2] => [1,3,5,2,4] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,4,5,2,1] => [1,2,5,4,3] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[3,5,4,2,1] => [1,5,4,3,2] => [1,5,4,3,2] => [1,5,4,3,2] => 0
[4,5,3,2,1] => [1,5,4,3,2] => [1,5,4,3,2] => [1,5,4,3,2] => 0
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
click to show known generating functions       
Description
The number of alignments of type NE of a signed permutation.
An alignment of type NE of a signed permutation $\pi\in\mathfrak H_n$ is a pair $1 \leq i, j\leq n$ such that $\pi(i) < i < j \leq \pi(j)$.
Map
Inverse fireworks map
Description
Sends a permutation to an inverse fireworks permutation.
A permutation $\sigma$ is inverse fireworks if its inverse avoids the vincular pattern $3-12$. The inverse fireworks map sends any permutation $\sigma$ to an inverse fireworks permutation that is below $\sigma$ in left weak order and has the same Rajchgot index St001759The Rajchgot index of a permutation..
Map
Simion-Schmidt map
Description
The Simion-Schmidt map sends any permutation to a $123$-avoiding permutation.
Details can be found in [1].
In particular, this is a bijection between $132$-avoiding permutations and $123$-avoiding permutations, see [1, Proposition 19].
Map
to signed permutation
Description
The signed permutation with all signs positive.