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A286277 Number of proper non-orientable regular hypermaps on a surface of genus n, up to isomorphism and triality. 0
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

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