A123447 - OEIS

A123447

Number of perfectly orderable perfect graphs on n nodes.

1, 2, 4, 11, 33, 147, 896, 8682, 131299, 3062755 (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: A123405 A123457 A123455 * A123461 A123407 A123446` `Adjacent sequences: A123444 A123445 A123446 * A123448 A123449 A123450`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Oct 18 2006`
	STATUS	`approved`

Last modified January 31 01:17 EST 2023. Contains 359947 sequences. (Running on oeis4.)