Numbers of unrooted hypermaps on the torus with n darts up to orientation-preserving homeomorphism (darts are semi-edges in the particular case of ordinary maps).
A118094
Numbers of unrooted hypermaps on the torus with n darts up to orientation-preserving homeomorphism (darts are semi-edges in the particular case of ordinary maps).
Terms
- a(0) =1a(1) =6a(2) =33a(3) =285a(4) =2115a(5) =16533a(6) =126501a(7) =972441a(8) =7451679a(9) =57167260a(10) =438644841a(11) =3369276867a(12) =25905339483a(13) =199408447446
External references
- oeis: A118094