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A286277
Number of proper non-orientable regular hypermaps on a surface of genus n, up to isomorphism and triality.
1
0, 0, 1, 0, 1, 0, 0, 1, 5, 0, 1, 0, 1, 0, 2, 4, 0, 0, 1, 0, 3, 1, 0, 2, 5, 0, 1, 3, 11, 0, 1, 0, 12, 0, 0, 0, 3, 0, 1, 2, 3, 0, 4, 0, 6, 3, 0, 0, 3, 0, 5, 1, 0, 0, 2, 4, 10, 0, 5, 0, 3, 0, 1, 8, 7, 0, 0, 0, 8, 0, 10, 0, 2, 0, 1, 2, 6, 4, 0, 0, 20, 5, 0, 0, 10
OFFSET
2,9
LINKS
Marston Conder, Home Page (Contains tables of regular maps, hypermaps and polytopes, trivalent symmetric graphs, and surface actions)
CROSSREFS
Sequence in context: A082512 A068385 A318657 * A225749 A227985 A071086
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 08 2017
EXTENSIONS
Terms a(25) and beyond from Conder's file added by Andrey Zabolotskiy, Dec 14 2022
STATUS
approved