Identifier
Values
[1,2] => [1,2] => 0
[2,1] => [2,1] => 0
[1,2,3] => [1,2,3] => 0
[1,3,2] => [3,1,2] => 0
[2,1,3] => [2,1,3] => 0
[2,3,1] => [2,3,1] => 0
[3,1,2] => [1,3,2] => 0
[3,2,1] => [3,2,1] => 0
[1,2,3,4] => [1,2,3,4] => 0
[1,2,4,3] => [4,1,2,3] => 0
[1,3,2,4] => [3,1,2,4] => 0
[1,3,4,2] => [3,4,1,2] => 0
[1,4,2,3] => [1,4,2,3] => 0
[1,4,3,2] => [4,3,1,2] => 0
[2,1,3,4] => [2,1,3,4] => 0
[2,1,4,3] => [2,4,1,3] => 0
[2,3,1,4] => [2,3,1,4] => 0
[2,3,4,1] => [2,3,4,1] => 1
[2,4,1,3] => [4,2,1,3] => 0
[2,4,3,1] => [4,2,3,1] => 1
[3,1,2,4] => [1,3,2,4] => 0
[3,1,4,2] => [1,3,4,2] => 1
[3,2,1,4] => [3,2,1,4] => 0
[3,2,4,1] => [3,2,4,1] => 1
[3,4,1,2] => [3,1,4,2] => 1
[3,4,2,1] => [3,4,2,1] => 1
[4,1,2,3] => [1,2,4,3] => 1
[4,1,3,2] => [4,1,3,2] => 1
[4,2,1,3] => [2,1,4,3] => 1
[4,2,3,1] => [2,4,3,1] => 1
[4,3,1,2] => [1,4,3,2] => 1
[4,3,2,1] => [4,3,2,1] => 1
[1,2,3,4,5] => [1,2,3,4,5] => 0
[1,2,3,5,4] => [5,1,2,3,4] => 0
[1,2,4,3,5] => [4,1,2,3,5] => 0
[1,2,4,5,3] => [4,5,1,2,3] => 0
[1,2,5,3,4] => [1,5,2,3,4] => 0
[1,2,5,4,3] => [5,4,1,2,3] => 0
[1,3,2,4,5] => [3,1,2,4,5] => 0
[1,3,2,5,4] => [3,5,1,2,4] => 0
[1,3,4,2,5] => [3,4,1,2,5] => 0
[1,3,4,5,2] => [3,4,5,1,2] => 2
[1,3,5,2,4] => [5,3,1,2,4] => 0
[1,3,5,4,2] => [5,3,4,1,2] => 2
[1,4,2,3,5] => [1,4,2,3,5] => 0
[1,4,2,5,3] => [1,4,5,2,3] => 2
[1,4,3,2,5] => [4,3,1,2,5] => 0
[1,4,3,5,2] => [4,3,5,1,2] => 2
[1,4,5,2,3] => [4,1,5,2,3] => 2
[1,4,5,3,2] => [4,5,3,1,2] => 2
[1,5,2,3,4] => [1,2,5,3,4] => 2
[1,5,2,4,3] => [5,1,4,2,3] => 2
[1,5,3,2,4] => [5,1,3,2,4] => 1
[1,5,3,4,2] => [3,5,4,1,2] => 2
[1,5,4,2,3] => [1,5,4,2,3] => 2
[1,5,4,3,2] => [5,4,3,1,2] => 2
[2,1,3,4,5] => [2,1,3,4,5] => 0
[2,1,3,5,4] => [2,5,1,3,4] => 0
[2,1,4,3,5] => [2,4,1,3,5] => 0
[2,1,4,5,3] => [2,4,5,1,3] => 2
[2,1,5,3,4] => [5,2,1,3,4] => 0
[2,1,5,4,3] => [5,2,4,1,3] => 2
[2,3,1,4,5] => [2,3,1,4,5] => 0
[2,3,1,5,4] => [2,3,5,1,4] => 2
[2,3,4,1,5] => [2,3,4,1,5] => 1
[2,3,4,5,1] => [2,3,4,5,1] => 1
[2,3,5,1,4] => [5,2,3,1,4] => 1
[2,3,5,4,1] => [5,2,3,4,1] => 1
[2,4,1,3,5] => [4,2,1,3,5] => 0
[2,4,1,5,3] => [4,2,5,1,3] => 2
[2,4,3,1,5] => [4,2,3,1,5] => 1
[2,4,3,5,1] => [4,2,3,5,1] => 1
[2,4,5,1,3] => [4,5,2,1,3] => 1
[2,4,5,3,1] => [4,5,2,3,1] => 1
[2,5,1,3,4] => [2,1,5,3,4] => 2
[2,5,1,4,3] => [2,5,4,1,3] => 2
[2,5,3,1,4] => [2,5,3,1,4] => 1
[2,5,3,4,1] => [2,5,3,4,1] => 1
[2,5,4,1,3] => [5,4,2,1,3] => 1
[2,5,4,3,1] => [5,4,2,3,1] => 1
[3,1,2,4,5] => [1,3,2,4,5] => 0
[3,1,2,5,4] => [1,3,5,2,4] => 2
[3,1,4,2,5] => [1,3,4,2,5] => 1
[3,1,4,5,2] => [1,3,4,5,2] => 1
[3,1,5,2,4] => [3,1,5,2,4] => 2
[3,1,5,4,2] => [5,1,3,4,2] => 1
[3,2,1,4,5] => [3,2,1,4,5] => 0
[3,2,1,5,4] => [3,2,5,1,4] => 2
[3,2,4,1,5] => [3,2,4,1,5] => 1
[3,2,4,5,1] => [3,2,4,5,1] => 1
[3,2,5,1,4] => [3,5,2,1,4] => 1
[3,2,5,4,1] => [3,5,2,4,1] => 1
[3,4,1,2,5] => [3,1,4,2,5] => 1
[3,4,1,5,2] => [3,1,4,5,2] => 1
[3,4,2,1,5] => [3,4,2,1,5] => 1
[3,4,2,5,1] => [3,4,2,5,1] => 1
[3,4,5,1,2] => [3,4,1,5,2] => 0
[3,4,5,2,1] => [3,4,5,2,1] => 2
[3,5,1,2,4] => [1,5,3,2,4] => 1
[3,5,1,4,2] => [3,5,1,4,2] => 0
[3,5,2,1,4] => [5,3,2,1,4] => 1
>>> Load all 152 entries. <<<
[3,5,2,4,1] => [5,3,2,4,1] => 1
[3,5,4,1,2] => [5,3,1,4,2] => 0
[3,5,4,2,1] => [5,3,4,2,1] => 2
[4,1,2,3,5] => [1,2,4,3,5] => 1
[4,1,2,5,3] => [1,2,4,5,3] => 1
[4,1,3,2,5] => [4,1,3,2,5] => 1
[4,1,3,5,2] => [4,1,3,5,2] => 1
[4,1,5,2,3] => [4,1,2,5,3] => 0
[4,1,5,3,2] => [4,5,1,3,2] => 0
[4,2,1,3,5] => [2,1,4,3,5] => 1
[4,2,1,5,3] => [2,1,4,5,3] => 1
[4,2,3,1,5] => [2,4,3,1,5] => 1
[4,2,3,5,1] => [2,4,3,5,1] => 1
[4,2,5,1,3] => [2,4,1,5,3] => 0
[4,2,5,3,1] => [2,4,5,3,1] => 2
[4,3,1,2,5] => [1,4,3,2,5] => 1
[4,3,1,5,2] => [1,4,3,5,2] => 1
[4,3,2,1,5] => [4,3,2,1,5] => 1
[4,3,2,5,1] => [4,3,2,5,1] => 1
[4,3,5,1,2] => [4,3,1,5,2] => 0
[4,3,5,2,1] => [4,3,5,2,1] => 2
[4,5,1,2,3] => [1,4,2,5,3] => 0
[4,5,1,3,2] => [1,4,5,3,2] => 2
[4,5,2,1,3] => [4,2,1,5,3] => 0
[4,5,2,3,1] => [4,2,5,3,1] => 2
[4,5,3,1,2] => [4,1,5,3,2] => 2
[4,5,3,2,1] => [4,5,3,2,1] => 2
[5,1,2,3,4] => [1,2,3,5,4] => 0
[5,1,2,4,3] => [5,1,2,4,3] => 0
[5,1,3,2,4] => [3,1,2,5,4] => 0
[5,1,3,4,2] => [1,5,3,4,2] => 1
[5,1,4,2,3] => [1,5,2,4,3] => 0
[5,1,4,3,2] => [5,4,1,3,2] => 0
[5,2,1,3,4] => [2,1,3,5,4] => 0
[5,2,1,4,3] => [2,5,1,4,3] => 0
[5,2,3,1,4] => [2,3,1,5,4] => 0
[5,2,3,4,1] => [2,3,5,4,1] => 2
[5,2,4,1,3] => [5,2,1,4,3] => 0
[5,2,4,3,1] => [5,2,4,3,1] => 2
[5,3,1,2,4] => [1,3,2,5,4] => 0
[5,3,1,4,2] => [1,3,5,4,2] => 2
[5,3,2,1,4] => [3,2,1,5,4] => 0
[5,3,2,4,1] => [3,2,5,4,1] => 2
[5,3,4,1,2] => [3,1,5,4,2] => 2
[5,3,4,2,1] => [3,5,4,2,1] => 2
[5,4,1,2,3] => [1,2,5,4,3] => 2
[5,4,1,3,2] => [5,1,4,3,2] => 2
[5,4,2,1,3] => [2,1,5,4,3] => 2
[5,4,2,3,1] => [2,5,4,3,1] => 2
[5,4,3,1,2] => [1,5,4,3,2] => 2
[5,4,3,2,1] => [5,4,3,2,1] => 2
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Description
The number of inversions of the third entry of a permutation.
This is, for a permutation $\pi$ of length $n$,
$$\# \{3 < k \leq n \mid \pi(3) > \pi(k)\}.$$
The number of inversions of the first entry is St000054The first entry of the permutation. and the number of inversions of the second entry is St001557The number of inversions of the second entry of a permutation.. The sequence of inversions of all the entries define the Lehmer code of a permutation.
Map
inverse Foata bijection
Description
The inverse of Foata's bijection.
See Mp00067Foata bijection.