A091118 Numbers n such that there is no regular hypermap on the nonorientable surface of characteristic -n.

0, 1, 16, 22, 25, 37, 46

Offset

1,3

Links

Table of n, a(n) for n=1..7.

S. Wilson and A. B. d'Azevedo, Surfaces having no regular hypermaps, Discrete Math., 277 (2004), 241-274.

Crossrefs

Sequence in context: A065778 A305944 A243972 * A294125 A360735 A341169

Adjacent sequences: A091115 A091116 A091117 * A091119 A091120 A091121

Keyword

nonn,more

Author

N. J. A. Sloane, Feb 22 2004

Status

approved