id:A069152 - OEIS Search Results

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a(n)=(n-1)!-n^tau(n)/n^2.

+0
1

0, 1, 2, 23, 84, 719, 4976, 40311, 362780, 3628799, 39896064, 479001599, 6227020604, 87178290975, 1307674363904, 20922789887999, 355687427991024, 6402373705727999, 121645100408672000, 2432902008176639559 (list; graph; listen)

	OFFSET	`2,3`
	COMMENT	`n and a(n) have the same parity.`
	CROSSREFS	`Cf. A062758.` `Sequence in context: A042679 A097232 A099134 this_sequence A131464 A053999 A131176` `Adjacent sequences: A069149 A069150 A069151 this_sequence A069153 A069154 A069155`
	KEYWORD	`easy,nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Apr 08 2002`

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Last modified December 2 15:58 EST 2008. Contains 150992 sequences.

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