A126753 - OEIS

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A126753

Number of biconnected graphs on n nodes with chromatic number 5.

0, 0, 0, 0, 1, 3, 34, 627, 23262, 1686975 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,6`
	COMMENTS	`It is possible that the definition should say "connected" rather than "biconnected". Should be rechecked! - Max Alekseyev and Brendan McKay, Jun 17 2008`
	LINKS	`Keith M. Briggs, Combinatorial Graph Theory`
	CROSSREFS	`A diagonal of triangle in A126749.` `Sequence in context: A045727 A105713 A143638 * A047794 A109521 A069718` `Adjacent sequences: A126750 A126751 A126752 * A126754 A126755 A126756`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 18 2007`

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Last modified February 14 09:56 EST 2012. Contains 205614 sequences.