A006441 Number of nonseparable toroidal tree-rooted maps with n + 4 edges and n + 1 vertices. (Formerly M4754)

10, 595, 11010, 111650, 773640, 4104225, 17838730, 66390610, 218140650

Offset

0,1

Comments

The number of faces is 3. - Andrew Howroyd, Apr 05 2021

References

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

Table of n, a(n) for n=0..8.

T. R. S. Walsh and A. B. Lehman, Counting rooted maps by genus. III: Nonseparable maps, J. Combinatorial Theory Ser. B 18 (1975), 222-259.

Crossrefs

Cf. A006414, A006415.

Sequence in context: A273032 A185277 A364515 * A042751 A285372 A308145

Adjacent sequences: A006438 A006439 A006440 * A006442 A006443 A006444

Keyword

nonn,more

Author

N. J. A. Sloane

Extensions

Name clarified by Andrew Howroyd, Apr 05 2021

Status

approved