A215621 - OEIS

A215621

Number of nonplanar apex graphs on n vertices.

0, 0, 0, 0, 1, 13, 204, 4700, 147063, 5669609 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,6`
	LINKS	`Table of n, a(n) for n=1..10.` `Eric Weisstein's World of Mathematics, Apex Graph` `Eric Weisstein's World of Mathematics, Nonplanar Graph`
	CROSSREFS	`Cf. A215620 (counts of all apex graphs, including planar ones).` `Sequence in context: A014404 A057807 A057804 * A299960 A194727 A059355` `Adjacent sequences: A215618 A215619 A215620 * A215622 A215623 A215624`
	KEYWORD	`nonn,more`
	AUTHOR	`Eric W. Weisstein, Aug 17 2012`
	EXTENSIONS	`a(10) from Eric W. Weisstein, Aug 20 2012`
	STATUS	`approved`

Last modified February 7 07:24 EST 2023. Contains 360112 sequences. (Running on oeis4.)