A123440 - OEIS

A123440

Number of P_4-reducible perfect graphs on n nodes.

1, 2, 4, 11, 27, 76, 212, 631, 1893, 5846 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..10.` `S. Hougardy, Home Page` `S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.`
	CROSSREFS	`Sequence in context: A159337 A243736 A316772 * A071314 A309886 A123441` `Adjacent sequences: A123437 A123438 A123439 * A123441 A123442 A123443`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Oct 18 2006`
	STATUS	`approved`

Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)