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

8,2

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.

Links

Table of n, a(n) for n=8..30.

Crossrefs

Column k=7 of A238125.

Sequence in context: A271603 A139736 A259987 * A128941 A272017 A270218

Adjacent sequences: A241775 A241776 A241777 * A241779 A241780 A241781

Keyword

nonn

Author

Joerg Arndt and Alois P. Heinz, Apr 28 2014

Status

approved