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A292972
Number of 5-regular maps with 2n vertices on the torus, up to orientation-preserving isomorphisms.
4
15, 6423, 4031952, 2839677570, 2111005408320, 1624203259187196, 1280171373413389056, 1027235174396893007472, 835745211680299639976976, 687471000510964612782875472
OFFSET
1,1
LINKS
E. Krasko, A. Omelchenko, Enumeration of r-regular Maps on the Torus. Part I: Enumeration of Rooted and Sensed Maps, arXiv preprint 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.
CROSSREFS
Cf. A292408 (3-regular), A292971 (4-regular), A292974 (6-regular).
Sequence in context: A251820 A296177 A206360 * A204677 A198250 A066968
KEYWORD
nonn,more
AUTHOR
Evgeniy Krasko, Sep 27 2017
STATUS
approved