Array read by antidiagonals: T(n,k) is the number of rooted (2k)-regular planar maps with n vertices, n >= 0, k >= 0.
A380241
Array read by antidiagonals: T(n,k) is the number of rooted (2k)-regular planar maps with n vertices, n >= 0, k >= 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =1a(9) =1a(10) =1a(11) =5a(12) =9a(13) =1a(14) =1a(15) =1a(16) =14a(17) =100a(18) =54a(19) =1a(20) =1a(21) =1a(22) =42a(23) =1225a(24) =3000a(25) =378a(26) =1a(27) =1a(28) =1a(29) =132
External references
- oeis: A380241