Number T(n,k) of rooted identity 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.
A256068
Number T(n,k) of rooted identity 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) =1a(5) =3a(6) =0a(7) =2a(8) =14a(9) =16a(10) =0a(11) =3a(12) =60a(13) =174a(14) =125a(15) =0a(16) =6a(17) =254a(18) =1434a(19) =2464a(20) =1296a(21) =0a(22) =12a(23) =1087a(24) =10746a(25) =33362a(26) =40455a(27) =16807a(28) =0a(29) =25
External references
- oeis: A256068