A116693 - OEIS

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A116693

Number of fixed-point-free subgroups of the symmetric group S_n.

1, 0, 1, 2, 15, 50, 874, 3515, 94638, 634630, 18368060, 149965474, 7392944314 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`N. J. A. Sloane, Transforms`
	FORMULA	`Inverse binomial Transform of A005432.`
	CROSSREFS	`Labeled version of A000637.` `Sequence in context: A041719 A133777 A025213 * A154565 A066562 A073877` `Adjacent sequences: A116690 A116691 A116692 * A116694 A116695 A116696`
	KEYWORD	`nonn,hard`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Feb 23 2006`

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.