A361140 Number of rooted bipartite maps of genus 1 with n edges.

0, 0, 4, 63, 720, 7254, 68460, 621315, 5496208, 47759130, 409620156, 3478672642, 29315742924, 245539064736, 2046309441924, 16983591315267

Offset

1,3

Links

Table of n, a(n) for n=1..16.

Valentin Bonzom, Guillaume Chapuy, and Maciej Dolega, Enumeration of non-oriented maps via integrability, Alg. Combin. 5 (6) (2022) pp. 1363-1390, A.2.

Crossrefs

Cf. A000257 (genus 0).

Sequence in context: A094323 A286438 A224249 * A335112 A227619 A177788

Adjacent sequences: A361137 A361138 A361139 * A361141 A361142 A361143

Keyword

nonn,more

Author

R. J. Mathar, Mar 02 2023

Status

approved