A123405 - OEIS

A123405

Number of alternately orientable perfect graphs on n nodes.

1, 2, 4, 11, 33, 147, 896, 8673, 130683, 3012745 (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: A277203 A123905 A123442 * A123457 A123455 A123447` `Adjacent sequences: A123402 A123403 A123404 * A123406 A123407 A123408`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Oct 18 2006`
	STATUS	`approved`

Last modified February 9 07:25 EST 2023. Contains 360153 sequences. (Running on oeis4.)