A084284 - OEIS

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A084284

Number of connected labeled 4-colorable (i.e. chromatic number <= 4) graphs on n nodes.

1, 1, 4, 38, 727, 26538 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	LINKS	`Eric Weisstein's World of Mathematics, n-Colorable Graph`
	CROSSREFS	`Cf. A001832, A084283, A084285, A084286.` `Sequence in context: A171779 A171203 A096332 * A084285 A084286 A001187` `Adjacent sequences: A084281 A084282 A084283 * A084285 A084286 A084287`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), May 25, 2003`

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Last modified February 15 11:21 EST 2012. Contains 205777 sequences.