Array read by antidiagonals: T(n,k) is the number of unrooted 3-connected triangulations of a disk with n interior nodes and k nodes on the boundary, n >= 1, k >= 3.
A342053
Array read by antidiagonals: T(n,k) is the number of unrooted 3-connected triangulations of a disk with n interior nodes and k nodes on the boundary, n >= 1, k >= 3.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =4a(6) =1a(7) =2a(8) =8a(9) =16a(10) =1a(11) =3a(12) =12a(13) =38a(14) =78a(15) =1a(16) =3a(17) =20a(18) =73a(19) =219a(20) =457a(21) =1a(22) =4a(23) =27a(24) =140a(25) =503a(26) =1404a(27) =2938a(28) =1a(29) =4
External references
- oeis: A342053