Triangle read by rows: T(n,k) = number of nonisomorphic unlabeled planar graphs with n >= 1 nodes and 0 <= k <= 3n-6 edges.
A039735
Triangle read by rows: T(n,k) = number of nonisomorphic unlabeled planar graphs with n >= 1 nodes and 0 <= k <= 3n-6 edges.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =2a(10) =3a(11) =2a(12) =1a(13) =1a(14) =1a(15) =1a(16) =2a(17) =4a(18) =6a(19) =6a(20) =6a(21) =4a(22) =2a(23) =1a(24) =1a(25) =1a(26) =2a(27) =5a(28) =9a(29) =15
External references
- oeis: A039735