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AdjacentSuccessorCount on StandardTableau ​

Entries whose successor is the neighbor to their right or directly below them.

On StandardTableau

Consecutive entries of a row or a column are always neighbors, so this counts the entries e with e + 1 in the same row or the same column.

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

Live

Distribution

Over StandardTableaux at each size, tallied here in your browser; sizes past 6 are not offered.

FindStat St000743

The number of entries in a standard Young tableau such that the next integer is a neighbour.

ObjectValue
[]0
[[1]]0
[[1,2]]1
[[1,2,3]]2
[[1],[2]]1
[[1,2,3,4]]3
[[1,2],[3]]1
[[1,3],[2]]1

Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St000743 has the rest.