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A118450
Number of rooted n-edge one-vertex one-face maps on a non-orientable surface (of genus n).
0
1, 4, 41, 488, 8229, 164892, 4016613, 112818960
OFFSET
1,2
COMMENTS
One-vertex one-face maps on orientable surfaces are counted by A035319.
REFERENCES
E. R. Canfield, Calculating the number of rooted maps on a surface, Congr. Numerantium, 76 (1990), 21-34.
D. M. Jackson and T. I. Visentin, An atlas of the smaller maps in orientable and nonorientable surfaces. CRC Press, Boca Raton, 2001.
CROSSREFS
Main diagonal of A267180.
Cf. A035319.
Sequence in context: A227996 A236528 A114467 * A024383 A110041 A064327
KEYWORD
more,nonn
AUTHOR
Valery A. Liskovets, May 04 2006
EXTENSIONS
a(7)-a(8) added by Andrew Howroyd, Jan 16 2022
STATUS
approved