id:A093352 - OEIS Search Results

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Number of labeled n-vertex graphs without a 2-component.

+0
4

1, 1, 1, 5, 55, 959, 31883, 2076383, 267530657, 68644357201, 35172312944057, 36025019516955853, 73784654524456043287, 302228644804839247744495, 2475873364061564307502565395, 40564787473148108729970731074007 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`E.g.f.: exp(-x^2/2)Sum(2^binomial(n, 2)x^n/n!, n=0..infinity).`
	CROSSREFS	`Cf. A093351.` `Sequence in context: A008543 A057130 A141357 this_sequence A155807 A135861 A141361` `Adjacent sequences: A093349 A093350 A093351 this_sequence A093353 A093354 A093355`
	KEYWORD	`nonn`
	AUTHOR	`Goran Kilibarda, Vladeta Jovovic (vladeta(AT)eunet.rs), Apr 26 2004`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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