Number of unrooted unlabeled not necessarily connected triangular maps on a compact closed oriented surface with 2n faces (and thus 3n edges).
A129115
Number of unrooted unlabeled not necessarily connected triangular maps on a compact closed oriented surface with 2n faces (and thus 3n edges).
Terms
- a(0) =1a(1) =3a(2) =17a(3) =124a(4) =1618a(5) =33564a(6) =956263a(7) =33736198a(8) =1402665692a(9) =66902717187
External references
- oeis: A129115