Triangle T(n,k) (n >= 2, 1 <= k <= n-1) giving number of non-crossing trees with n nodes and height k.
A072248
Triangle T(n,k) (n >= 2, 1 <= k <= n-1) giving number of non-crossing trees with n nodes and height k.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =7a(5) =4a(6) =1a(7) =20a(8) =26a(9) =8a(10) =1a(11) =54a(12) =126a(13) =76a(14) =16a(15) =1a(16) =143a(17) =548a(18) =504a(19) =200a(20) =32a(21) =1a(22) =376a(23) =2259a(24) =2900a(25) =1656a(26) =496a(27) =64a(28) =1a(29) =986
External references
- oeis: A072248