Number T(m,n) of series-reduced free trees with n nodes of which exactly m >= 3 are leaves, m+1 <= n <= 2m-2.
A271205
Number T(m,n) of series-reduced free trees with n nodes of which exactly m >= 3 are leaves, m+1 <= n <= 2m-2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =2a(9) =2a(10) =1a(11) =2a(12) =4a(13) =4a(14) =2a(15) =1a(16) =3a(17) =6a(18) =10a(19) =8a(20) =4a(21) =1a(22) =3a(23) =9a(24) =17a(25) =22a(26) =15a(27) =6a(28) =1a(29) =4
External references
- oeis: A271205