Triangular array of the number of binary, rooted, leaf-labeled tree topologies with n leaves and k cherries, n >= 2, 1 <= k <= floor(n/2).
A306364
Triangular array of the number of binary, rooted, leaf-labeled tree topologies with n leaves and k cherries, n >= 2, 1 <= k <= floor(n/2).
Terms
- a(0) =1a(1) =3a(2) =12a(3) =3a(4) =60a(5) =45a(6) =360a(7) =540a(8) =45a(9) =2520a(10) =6300a(11) =1575a(12) =20160a(13) =75600a(14) =37800a(15) =1575a(16) =181440a(17) =952560a(18) =793800a(19) =99225a(20) =1814400a(21) =12700800a(22) =15876000a(23) =3969000a(24) =99225a(25) =19958400a(26) =179625600a(27) =314344800a(28) =130977000a(29) =9823275
External references
- oeis: A306364