id:A024488 - OEIS Search Results

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a(n) = (1/(3n-1))*M(3n; n,n,n), where M(...) is a multinomial coefficient.

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3, 18, 210, 3150, 54054, 1009008, 19953648, 411543990, 8764362750, 191413682460, 4266468608220, 96706621786320, 2223107844022800, 51721284534408000, 1215794995122150720, 28837137540553512390 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A160707 A135077 A157538 this_sequence A163883 A132727 A111841` `Adjacent sequences: A024485 A024486 A024487 this_sequence A024489 A024490 A024491`
	KEYWORD	`nonn,easy`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`
	EXTENSIONS	`More terms from James A. Sellers (sellersj(AT)math.psu.edu), Aug 08 2000`

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Last modified December 6 11:04 EST 2009. Contains 170427 sequences.

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