Number of trees with n bicolored nodes and f nodes of the first color. Triangle T(n,f) read by rows, 0<=f<=n.
A294783
Number of trees with n bicolored nodes and f nodes of the first color. Triangle T(n,f) read by rows, 0<=f<=n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =1a(10) =2a(11) =4a(12) =6a(13) =4a(14) =2a(15) =3a(16) =9a(17) =15a(18) =15a(19) =9a(20) =3a(21) =6a(22) =20a(23) =43a(24) =51a(25) =43a(26) =20a(27) =6a(28) =11a(29) =48
External references
- oeis: A294783