A104595 Number of unrooted maps with n edges of (orientable) genus 2.

4, 106, 2382, 46680, 830848, 13804864, 218353000, 3328822880, 49325772812, 714586880940, 10164338225482, 142403410942816, 1969831979334086, 26954132420126920, 365393525753591368, 4913176199287631232, 65593569635906036912, 870192550284377429780, 11479539192932030062066

Offset: 4

Author

Valery A. Liskovets, Mar 22 2005

Keywords

• nonn

Links

• T. D. Noe, Table of n, a(n) for n=4..30 (from Mednykh and Nedela)
• A. D. Mednykh and R. Nedela, Enumeration of unrooted maps with given genus, preprint (submitted to J. Combin. Th. B).
• Timothy R. S. Walsh, Alain Giorgetti, Alexander Mednykh, Enumeration of unrooted orientable maps of arbitrary genus by number of edges and vertices, Discrete Math. 312 (2012), no. 17, 2660--2671. MR2935417. - From _N. J. A. Sloane_, Aug 01 2012

Crossrefs

Column k=2 of A379438.

Cf. A006301 (rooted), A214814 (unsensed).

Cf. A006386, A104595, A104596, A215019.