A361139 Number of rooted bipartite maps of genus 1/2 with n edges.

0, 1, 9, 69, 510, 3738, 27405, 201569, 1488762, 11043318, 82257890, 615092178, 4615882908, 34752865332, 262437282621, 1987229885913

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: A125372 A165147 A075045 * A081616 A299915 A287818

Adjacent sequences: A361136 A361137 A361138 * A361140 A361141 A361142

Keyword

nonn,more

Author

R. J. Mathar, Mar 02 2023

Status

approved