A292109 Number of 5-regular maps with 2n vertices on the torus, up to orientation-preserving and orientation-reversing isomorphisms.

13, 3523, 2035550, 1421177130, 1055597813091, 812108624237833, 640086212334600319, 513617627395229165708, 417872608954804473932525, 343735500499416537210021983

Offset

1,1

Links

Table of n, a(n) for n=1..10.

E. Krasko, A. Omelchenko, Enumeration of r-regular Maps on the Torus. Part II: Enumeration of Unsensed Maps, arXiv preprint arXiv:1709.03230[math.CO], 2017.

E. Krasko, A. Omelchenko, Enumeration of r-regular maps on the torus. Part II: Unsensed maps, Discrete Mathematics, Volume 342, Issue 2, February 2019, pp. 600-614.

Crossrefs

Cf. A292405, A292468, A292110.

Sequence in context: A134159 A221851 A221924 * A337147 A070905 A180768

Adjacent sequences: A292106 A292107 A292108 * A292110 A292111 A292112

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 20 2017

Status

approved