a(n) is the number of rooted 5-regular maps with 2n vertices on the torus.
A322917
a(n) is the number of rooted 5-regular maps with 2n vertices on the torus.
Terms
- a(0) =120a(1) =125280a(2) =120800160a(3) =113579366400
External references
- oeis: A322917