A118450 Number of rooted n-edge one-vertex one-face maps on a non-orientable surface (of genus n).

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.

Links

Table of n, a(n) for n=1..8.

Crossrefs

Main diagonal of A267180.

Cf. A035319.

Sequence in context: A227996 A236528 A114467 * A024383 A110041 A064327

Adjacent sequences: A118447 A118448 A118449 * A118451 A118452 A118453

Keyword

more,nonn

Author

Valery A. Liskovets, May 04 2006

Extensions

a(7)-a(8) added by Andrew Howroyd, Jan 16 2022

Status

approved