id:A123691 - OEIS Search Results

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a(n) = number of standard Young tableaux of type (n,n-1,n-1).

+0
1

1, 3, 21, 210, 2574, 36036, 554268, 9145422, 159352050, 2900207310, 54698315490, 1062710129520, 21172455657360, 431010704453400, 8939669081780520, 188478023140872630, 4031562420682009290, 87350519114776867950 (list; graph; listen)

	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 this_sequence A087918 A088926 A120972` `Adjacent sequences: A123688 A123689 A123690 this_sequence A123692 A123693 A123694`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 15 2006`

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Last modified December 3 16:57 EST 2008. Contains 151279 sequences.

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