id:A087413 - OEIS Search Results

Search: id:A087413

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a(n)=(1/3)*sum(k=1,n,C(3*k,k)).

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1, 6, 34, 199, 1200, 7388, 46148, 291305, 1853580, 11868585, 76380825, 493606725, 3201081873, 20821158233, 135776966761, 887393271310, 5811082966885, 38119865826420, 250447855600320, 1647729357535485, 10854207824989830 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A049608 A154244 A126501 this_sequence A059228 A079568 A063090` `Adjacent sequences: A087410 A087411 A087412 this_sequence A087414 A087415 A087416`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Oct 21 2003`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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