A241775 Number of standard Young tableaux with n cells and exactly four successions.

1, 3, 13, 49, 201, 802, 3343, 14368, 62909, 282989, 1299074, 6111610, 29330177, 143869556, 719339872, 3669604633, 19062972671, 100880716332, 543086732800, 2974442015323, 16556687511535, 93655725178808, 537951557765438, 3137040309057826, 18560431188723607

Offset: 5

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 four flat steps.

Crossrefs

Column k=4 of A238125.