Number of subgroups of index n of fundamental group of the non-orientable cycle bundle over the Klein bottle.
A027844
Number of subgroups of index n of fundamental group of the non-orientable cycle bundle over the Klein bottle.
Terms
- a(0) =1a(1) =7a(2) =7a(3) =27a(4) =11a(5) =55a(6) =15a(7) =91a(8) =34a(9) =97a(10) =23a(11) =231a(12) =27a(13) =147a(14) =77a(15) =299a(16) =35a(17) =334a(18) =39a(19) =437a(20) =105a(21) =271a(22) =47a(23) =847a(24) =86a(25) =345a(26) =142a(27) =699a(28) =59a(29) =865
External references
- oeis: A027844