Number of subgroups of index n in fundamental group of a certain fiber space.
A027842
Number of subgroups of index n in fundamental group of a certain fiber space.
Terms
- a(0) =1a(1) =7a(2) =34a(3) =227a(4) =1296a(5) =10576a(6) =77554a(7) =729379a(8) =7013419a(9) =77371042a(10) =910455096a(11) =11877617828a(12) =165087132666
External references
- oeis: A027842