A322929 a(n) is the number of rooted 5-regular maps with 2n vertices on the projective plane.

215, 106820, 65476730, 44355884860, 31871222091735, 23809740820038860, 18286634336378438820, 14338651143931504204140, 11425366917170617116755180, 9221856681066077433854516240

Offset: 1

Author

Evgeniy Krasko, Dec 31 2018

Keywords

• nonn

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.