A292110 Number of 6-regular maps with n vertices on the torus, up to orientation-preserving and orientation-reversing isomorphisms.

3, 61, 1936, 89986, 4791784, 272005507, 15929826713, 951610091294, 57659992554993, 3532378891197016, 218331197907776846, 13594369669588615612

Offset: 1

Author

N. J. A. Sloane, Sep 20 2017

Keywords

• nonn
• more

Links

• 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. See Table 1, p. 20.
• 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, A292408, A292468, A292109.

Extensions

a(11)-a(12) from Evgeniy Krasko, Sep 27 2017