id:A126728 - OEIS Search Results

Search: id:A126728

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Number of graphs on n nodes with chromatic number 2.

+0
2

0, 0, 1, 3, 5, 10, 15, 26, 37, 58 (list; graph; listen)

	OFFSET	`1,4`
	LINKS	`Keith M. Briggs, Combinatorial Graph Theory`
	CROSSREFS	`A diagonal of triangle in A123962.` `Sequence in context: A024452 A074968 A090491 this_sequence A070557 A132302 A097513` `Adjacent sequences: A126725 A126726 A126727 this_sequence A126729 A126730 A126731`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 16 2007`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.