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A241776
Number of standard Young tableaux with n cells and exactly five successions.
1
1, 3, 17, 69, 322, 1408, 6440, 29555, 139005, 662522, 3228150, 15994167, 80849918, 415684406, 2177223330, 11594426886, 62826444538, 345909306526, 1935762918301, 10999013559517, 63460591709283, 371497097807233, 2206388300667674, 13286470507994738
OFFSET
6,2
COMMENTS
A succession is a pair of cells (v, v+1) lying in the same row.
Also number of ballot sequences having five flat steps.
CROSSREFS
Column k=5 of A238125.
Sequence in context: A034566 A357923 A069468 * A270231 A265919 A317452
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Apr 28 2014
STATUS
approved