BBC Russian

Svoboda | Graniru | BBC Russia | Golosameriki | Facebook

The OEIS is supported by the many generous donors to the OEIS Foundation.

A241775

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

1

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

5,2

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.

LINKS

Table of n, a(n) for n=5..29.

CROSSREFS

Column k=4 of A238125.

Sequence in context: A251743 A178934 A218420 * A045908 A118589 A375653

Adjacent sequences: A241772 A241773 A241774 * A241776 A241777 A241778

KEYWORD

nonn

AUTHOR

Joerg Arndt and Alois P. Heinz, Apr 28 2014

STATUS

approved