A099436 - OEIS

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A099436

Number of simple connected class-1 graphs on n nodes.

1, 1, 1, 6, 17, 109, 821, 11050, 260150 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	LINKS	`Eric Weisstein's World of Mathematics, Class 1 Graph` `Gordon Royle, Small Graphs: Class 2 Graphs.`
	CROSSREFS	`Cf. A099435 (number of simple class-1 graphs on n nodes).` `Cf. A099438 (number of connected class-2 graphs on n nodes).` `Sequence in context: A154494 A130278 A024080 * A077022 A074923 A093061` `Adjacent sequences: A099433 A099434 A099435 * A099437 A099438 A099439`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), Oct 15, 2004`
	EXTENSIONS	`More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 30 2007` `Verified up to a(9) by Eric Weisstein (eric@weisstein.com), Nov 21 2011`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.