Triangle T(n,k) read by rows: T(n,k) is the number of rooted genus-k maps with n edges, n>=0, 0<=k<=n.
A238396
Triangle T(n,k) read by rows: T(n,k) is the number of rooted genus-k maps with n edges, n>=0, 0<=k<=n.
Terms
- a(0) =1a(1) =2a(2) =0a(3) =9a(4) =1a(5) =0a(6) =54a(7) =20a(8) =0a(9) =0a(10) =378a(11) =307a(12) =21a(13) =0a(14) =0a(15) =2916a(16) =4280a(17) =966a(18) =0a(19) =0a(20) =0a(21) =24057a(22) =56914a(23) =27954a(24) =1485a(25) =0a(26) =0a(27) =0a(28) =208494a(29) =736568
External references
- oeis: A238396