id:A158007 - OEIS Search Results

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Number of simple connected noneulerian graphs on n nodes.

+0
2

0, 1, 1, 5, 17, 104, 816, 10933, 259298, 11685545, 1005551939, 163973291348, 50323109433351, 28999867293155772, 31395440775755417399, 63967594175789887438112, 245868065133951888388878298 (list; graph; listen)

	OFFSET	`1,4`
	COMMENT	`Euler transform of a(n) gives A007126(n+1). [From Vladeta Jovovic (vladeta(AT)eunet.yu), Mar 17 2009]`
	LINKS	`Eric Weisstein's World of Mathematics, Noneulerian Graph`
	FORMULA	`a(n) = A001349(n) - A003049(n). [From Vladeta Jovovic (vladeta(AT)eunet.yu), Mar 17 2009]`
	CROSSREFS	`Cf. A007126, A001349, A003049.` `Sequence in context: A076516 A145986 A034821 this_sequence A143562 A098028 A100301` `Adjacent sequences: A158004 A158005 A158006 this_sequence A158008 A158009 A158010`
	KEYWORD	`nonn`
	AUTHOR	`E. W. Weisstein (eric(AT)weisstein.com), Mar 11, 2009`
	EXTENSIONS	`More terms via inverse Euler transform of A007126 by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 29 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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