SmallWeakExcedances on Permutation

Positions with p(i) = i or p(i) = i + 1.

On Permutation

Called as CombinatorialStat(x, "SmallWeakExcedances"). The head's page has its examples.

Live

Distribution

Over SymmetricGroup at each size, tallied here in your browser; sizes past 8 are not offered.

Sizes 1 to

FindStat St000239

The number of small weak excedances.

Object	Value
[1]	1
[1,2]	2
[2,1]	1
[1,2,3]	3
[1,3,2]	2
[2,1,3]	2
[2,3,1]	2
[3,1,2]	0

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St000239 has the rest.