A241778 Number of standard Young tableaux with n cells and exactly seven successions.

1, 4, 28, 137, 751, 3797, 19868, 103169, 544446, 2892654, 15609326, 85185225, 471914661, 2647616529, 15072126865, 86928421109, 508477806633, 3013152898489, 18098553323837, 110098999926894, 678500886312946, 4233264326440478, 26741870913391272

Offset: 8

Author

Joerg Arndt and Alois P. Heinz, Apr 28 2014

Keywords

• nonn

Comments

A succession is a pair of cells (v, v+1) lying in the same row.

Also number of ballot sequences having seven flat steps.

Crossrefs

Column k=7 of A238125.