A123458 - OEIS

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A123458

Number of split graphs on n nodes that are perfect.

1, 2, 4, 9, 21, 56, 164, 557, 2223, 10766 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Is this the same as A048194? - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 18 2008`
	REFERENCES	`S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.`
	LINKS	`S. Hougardy, Home Page`
	CROSSREFS	`Sequence in context: A006080 A148074 A130866 * A048194 A148075 A058718` `Adjacent sequences: A123455 A123456 A123457 * A123459 A123460 A123461`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 18 200, Jul 03 2008`

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Last modified February 16 23:45 EST 2012. Contains 205978 sequences.