id:A100569 - OEIS Search Results

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Number of n-node oriented graphs without endpoints.

+0
2

1, 1, 1, 9, 337, 37889, 11410545, 9368733289, 21760617258977, 146872848650637249, 2927557787922534645793, 173801937725990883065857673, 30857177979379449393077427767217 (list; graph; listen)

	OFFSET	`0,4`
	FORMULA	`E.g.f.: exp(x^2)Sum(3^(n(n-1)/2)(x/exp(2x))^n/n!, n=0..infinity).`
	CROSSREFS	`Cf. A059167.` `Sequence in context: A041619 A111968 A012105 this_sequence A090087 A090085 A098650` `Adjacent sequences: A100566 A100567 A100568 this_sequence A100570 A100571 A100572`
	KEYWORD	`nonn`
	AUTHOR	`Goran Kilibarda, Zoran Maksimovic, Vladeta Jovovic (vladeta(AT)Eunet.yu), Jan 02 2005`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research