A322918 a(n) is the number of rooted 6-regular maps with n vertices on the torus.
10, 800, 58000, 4080000, 283100000, 19496000000, 1336380000000, 91320000000000, 6226591000000000, 423871680000000000
Offset: 1
Links
- E. Krasko, A. Omelchenko, Enumeration of r-regular Maps on the Torus. Part I: Enumeration of Rooted and Sensed Maps, arXiv:1709.03225 [math.CO], 2017.
- E. Krasko, A. Omelchenko, Enumeration of r-regular maps on the torus. Part I: Rooted maps on the torus, the projective plane and the Klein bottle. Sensed maps on the torus, Discrete Mathematics, Volume 342, Issue 2, February 2019, pp. 584-599.