A306364 - cp's OEIS frontend

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).

n	a(n)
2	1
3	3
4	12
5	3
6	60
7	45
8	360
9	540
10	45
11	2520
12	6300
13	1575
14	20160
15	75600
16	37800
17	1575
18	181440
19	952560
20	793800
21	99225
22	1814400
23	12700800
24	15876000
25	3969000
26	99225
27	19958400
28	179625600
29	314344800
30	130977000
31	9823275

[1, 3, 12, 3, 60, 45, 360, 540, 45, 2520, 6300, 1575, 20160, 75600, 37800, 1575, 181440, 952560, 793800, 99225, 1814400, 12700800, 15876000, 3969000, 99225, 19958400, 179625600, 314344800, 130977000, 9823275]

cp's OEIS Frontend

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).

Table of values

List of values