A380623 Number of rooted 5-regular combinatorial maps with 2n vertices.

1, 189, 869400, 16482741030, 811815704093520, 82428779884228798041, 14987637044586056537983800, 4438122232105976899960948809420, 1998996880327869592350459728071408800, 1300772228637464354810371940980750446850116, 1174611244368635468934806695142536970482225836000

Offset: 0

Author

Andrew Howroyd, Jan 29 2025

Keywords

• nonn

Comments

There are no 5-regular combinatorial maps with an odd number of vertices.

Links

• Andrew Howroyd, Table of n, a(n) for n = 0..100

Crossrefs

With interspersed zeros column 5 of A380622.