id:A138286 - OEIS Search Results

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a(n)=A058162(n)/A000688(n).

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1, 1, 1, 2, 6, 60, 120, 640, 3780, 90720, 362880, 6652800, 39916800, 1037836800, 10897286400, 53109444960, 1307674368000, 33345696384000, 355687428096000, 10137091700736000, 231704953159680000 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n) = A058162[n]/A000688[n]`
	CROSSREFS	`Cf. A058162, A000688.` `Sequence in context: A132525 A074167 A083787 this_sequence A102290 A025540 A083135` `Adjacent sequences: A138283 A138284 A138285 this_sequence A138287 A138288 A138289`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Mar 12 2008`

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Last modified November 22 15:28 EST 2009. Contains 167310 sequences.

AT&T Labs Research