A132219 - OEIS

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A132219

Number of line graphs on n labeled nodes.

1, 2, 8, 66, 774, 11885, 230858, 5512821, 157926273, 5323010347, 207833183972, 9280406921629, 468879370270319, 26561064972285450, 1673867356632729422, 116555375609273658636, 8914259769349445083676, 744876885721366948399627 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`E.g.f.: exp(x/2-x^3/6)Sum(A020556(n)(ln(1+x)/2)^n/n!, n=0..infinity).`
	CROSSREFS	`Cf. A132220(unlabeled case).` `Sequence in context: A011836 A100623 A086594 * A202553 A023164 A053922` `Adjacent sequences: A132216 A132217 A132218 * A132220 A132221 A132222`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 14 2007`

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Last modified February 14 20:38 EST 2012. Contains 205663 sequences.