The number of circular maps C(n) with n edges regardless of genus.
A234278
The number of circular maps C(n) with n edges regardless of genus.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =16a(4) =56a(5) =333a(6) =2147a(7) =17456a(8) =158022a(9) =1604281a(10) =17863089a(11) =216774585a(12) =2844162968a(13) =40129498111a(14) =605894465441
External references
- oeis: A234278