id:A102736 - OEIS Search Results

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Number of permutations of n elements without cycles whose length is a multiple of 3.

+0
3

1, 2, 4, 16, 80, 400, 2800, 22400, 179200, 1792000, 19712000, 216832000, 2818816000, 39463424000, 552487936000, 8839806976000, 150276718592000, 2554704216064000, 48539380105216000, 970787602104320000 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`E.g.f.: (1-x^3)^(1/3)/(1-x).`
	CROSSREFS	`Cf. A000090, A000246.` `Sequence in context: A162119 A155519 A058926 this_sequence A103619 A027436 A025225` `Adjacent sequences: A102733 A102734 A102735 this_sequence A102737 A102738 A102739`
	KEYWORD	`easy,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 08 2005`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research