Number T(n,k) of rooted trees with n nodes and colored non-root nodes using exactly k colors; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.
A256064
Number T(n,k) of rooted trees with n nodes and colored non-root nodes using exactly k colors; triangle T(n,k), n>=1, 0<=k<=n-1, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =3a(6) =0a(7) =4a(8) =18a(9) =16a(10) =0a(11) =9a(12) =89a(13) =201a(14) =125a(15) =0a(16) =20a(17) =418a(18) =1830a(19) =2720a(20) =1296a(21) =0a(22) =48a(23) =1962a(24) =14845a(25) =39720a(26) =43580a(27) =16807a(28) =0a(29) =115
External references
- oeis: A256064