Triangle read by rows: T(n,k) is the number of n-node connected unsensed planar maps with an external face and k triangular internal faces, n >= 3, 1 <= k <= 2*n - 5.
A378103
Triangle read by rows: T(n,k) is the number of n-node connected unsensed planar maps with an external face and k triangular internal faces, n >= 3, 1 <= k <= 2*n - 5.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =1a(7) =2a(8) =1a(9) =0a(10) =0a(11) =2a(12) =4a(13) =4a(14) =5a(15) =4a(16) =0a(17) =0a(18) =2a(19) =6a(20) =10a(21) =14a(22) =14a(23) =18a(24) =16a(25) =0a(26) =0a(27) =0a(28) =7a(29) =18
External references
- oeis: A378103