Number of non-equivalent n-fold branched coverings of the projective plane with two cyclic branch points.
A113947
Number of non-equivalent n-fold branched coverings of the projective plane with two cyclic branch points.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =8a(4) =16a(5) =64a(6) =264a(7) =1580a(8) =10648a(9) =84320a(10) =750380a(11) =7455312a(12) =81566928a(13) =974988768a(14) =12636692720a(15) =176505029160
External references
- oeis: A113947