A323279 Number of 3-regular maps on the Klein bottle with n vertices.

6, 174, 4236, 97134, 2163636, 47394444, 1027091736, 22094309934, 472740763236, 10074173087364

Offset

1,1

Links

Table of n, a(n) for n=1..10.

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

Sequence in context: A323820 A317795 A166762 * A214801 A233225 A055165

Adjacent sequences: A323276 A323277 A323278 * A323280 A323281 A323282

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 11 2019

Status

approved