A055314 - cp's OEIS frontend

A055314 Triangle T(n,k) read by rows: number of labeled trees with n nodes and k leaves, n >= 2, 2 <= k <= n.

n	a(n)
2	1
3	3
4	0
5	12
6	4
7	0
8	60
9	60
10	5
11	0
12	360
13	720
14	210
15	6
16	0
17	2520
18	8400
19	5250
20	630
21	7
22	0
23	20160
24	100800
25	109200
26	30240
27	1736
28	8
29	0
30	181440
31	1270080
32	2116800
33	1058400
34	151704
35	4536
36	9
37	0
38	1814400
39	16934400
40	40219200
41	31752000
42	8573040
43	695520
44	11430
45	10
46	0

[1, 3, 0, 12, 4, 0, 60, 60, 5, 0, 360, 720, 210, 6, 0, 2520, 8400, 5250, 630, 7, 0, 20160, 100800, 109200, 30240, 1736, 8, 0, 181440, 1270080, 2116800, 1058400, 151704, 4536, 9, 0, 1814400, 16934400, 40219200, 31752000, 8573040, 695520, 11430, 10, 0]

cp's OEIS Frontend

A055314 Triangle T(n,k) read by rows: number of labeled trees with n nodes and k leaves, n >= 2, 2 <= k <= n.

Table of values

List of values