Triangle read by rows: T(n,k) is the number of rooted hypermaps of genus k with n darts.

Terms

a(0) =1a(1) =3a(2) =12a(3) =1a(4) =56a(5) =15a(6) =288a(7) =165a(8) =8a(9) =1584a(10) =1611a(11) =252a(12) =9152a(13) =14805a(14) =4956a(15) =180a(16) =54912a(17) =131307a(18) =77992a(19) =9132a(20) =339456a(21) =1138261a(22) =1074564a(23) =268980a(24) =8064a(25) =2149888a(26) =9713835a(27) =13545216a(28) =6010220a(29) =579744