id:A084284 - OEIS Search Results

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

+0
4

1, 1, 4, 38, 727, 26538 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`Eric Weisstein's World of Mathematics, n-Colorable Graph`
	CROSSREFS	`Cf. A001832, A084283, A084285, A084286.` `Sequence in context: A138214 A138562 A096332 this_sequence A084285 A084286 A001187` `Adjacent sequences: A084281 A084282 A084283 this_sequence A084285 A084286 A084287`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), May 25, 2003`

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