OFFSET
1,1
LINKS
Evgeniy Krasko, Alexander 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 (2019) Vol. 342, Issue 2, 584-599. Also arXiv:1709.03225 [math.CO]. See Table 3.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jan 11 2019
STATUS
approved