id:A034724 - OEIS Search Results

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One quarter of sextic factorial numbers.

+0
10

1, 10, 160, 3520, 98560, 3351040, 134041600, 6165913600, 320627507200, 18596395417600, 1190169306726400, 83311851470848000, 6331700711784448000, 519199458366324736000, 45689552336236576768000 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`4a(n) = (6n-2)(!^6) := product(6j-2, j=1..n) = 2^(n+1)A034000(n), 2A034000(n)=(3n-1)(!^3); E.g.f. (-1+(1-6*x)^(-2/3))/4.`
	CROSSREFS	`Cf. A034000, A008542, A034689.` `Adjacent sequences: A034721 A034722 A034723 this_sequence A034725 A034726 A034727` `Sequence in context: A106261 A112125 A090374 this_sequence A074703 A064747 A054688`
	KEYWORD	`easy,nonn`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

AT&T Labs Research