Triangle read by rows: T(n,k) is the number of ordered trees with n edges having k odd-length branches starting at the root (0<=k<=n).
A127538
Triangle read by rows: T(n,k) is the number of ordered trees with n edges having k odd-length branches starting at the root (0<=k<=n).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =0a(7) =4a(8) =0a(9) =1a(10) =3a(11) =3a(12) =7a(13) =0a(14) =1a(15) =3a(16) =22a(17) =6a(18) =10a(19) =0a(20) =1a(21) =16a(22) =43a(23) =50a(24) =9a(25) =13a(26) =0a(27) =1a(28) =37a(29) =175
External references
- oeis: A127538