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
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.
- 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.