id:A091669 - OEIS Search Results

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a(n)=product(2*k-1,k=2..n-1)*2^(n-1)/n!.

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1, 1, 2, 7, 42, 434, 7812, 248031, 14055090, 1436430198, 267176016828, 91151551074486, 57425477176926180, 67196011936600334340, 146782968474309770332296, 601204690999713530559792879 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n)=2^(n-1)*A005329/n!.`
	CROSSREFS	`Sequence in context: A007065 A011802 A005130 this_sequence A108042 A001174 A067975` `Adjacent sequences: A091666 A091667 A091668 this_sequence A091670 A091671 A091672`
	KEYWORD	`nonn`
	AUTHOR	`Karol A. Penson (penson(AT)lptl.jussieu.fr), Jan 27 2004`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research