A286277 - OEIS

A286277

Number of proper non-orientable regular hypermaps on a surface of genus n, up to isomorphism and triality.

0, 0, 1, 0, 1, 0, 0, 1, 5, 0, 1, 0, 1, 0, 2, 4, 0, 0, 1, 0, 3, 1, 0 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`2,9`
	COMMENTS	`Needs more terms and a b-file (note that one of the links gives the first 201 terms).`
	LINKS	`Table of n, a(n) for n=2..24.` `Marston Conder, Home Page (Contains tables of regular maps, hypermaps and polytopes, trivalent symmetric graphs, and surface actions)` `Marston Conder, Non-orientable proper regular hypermaps of genus 2 to 202`
	CROSSREFS	`Sequence in context: A082512 A068385 A318657 * A225749 A227985 A071086` `Adjacent sequences: A286274 A286275 A286276 * A286278 A286279 A286280`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, May 08 2017`
	STATUS	`approved`

Last modified May 27 21:14 EDT 2022. Contains 354110 sequences. (Running on oeis4.)