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A123691 a(n) = number of standard Young tableaux of type (n,n-1,n-1). 0
1, 3, 21, 210, 2574, 36036, 554268, 9145422, 159352050, 2900207310, 54698315490, 1062710129520, 21172455657360, 431010704453400, 8939669081780520, 188478023140872630, 4031562420682009290, 87350519114776867950 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MATHEMATICA

(* first do *) Needs["DiscreteMath`Combinatorica`"] (* then *) Table[ NumberOfTableaux@{n, n - 1, n - 1}, {n, 18}]

CROSSREFS

Cf. A005789, A123555.

Sequence in context: A114469 A097690 A037967 * A087918 A088926 A120972

Adjacent sequences:  A123688 A123689 A123690 * A123692 A123693 A123694

KEYWORD

nonn

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 15 2006

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Last modified February 17 03:45 EST 2012. Contains 205978 sequences.