A091187 - cp's OEIS frontend

A091187 Triangle read by rows: T(n,k) is the number of ordered trees with n edges and k branches.

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	2
7	1
8	3
9	6
10	4
11	1
12	4
13	12
14	16
15	9
16	1
17	5
18	20
19	40
20	45
21	21
22	1
23	6
24	30
25	80
26	135
27	126
28	51
29	1
30	7
31	42
32	140
33	315
34	441
35	357
36	127
37	1
38	8
39	56
40	224
41	630
42	1176
43	1428
44	1016
45	323
46	1
47	9
48	72
49	336
50	1134
51	2646
52	4284
53	4572
54	2907
55	835
56	1
57	10
58	90
59	480
60	1890
61	5292
62	10710
63	15240
64	14535
65	8350
66	2188

[1, 1, 1, 1, 2, 2, 1, 3, 6, 4, 1, 4, 12, 16, 9, 1, 5, 20, 40, 45, 21, 1, 6, 30, 80, 135, 126, 51, 1, 7, 42, 140, 315, 441, 357, 127, 1, 8, 56, 224, 630, 1176, 1428, 1016, 323, 1, 9, 72, 336, 1134, 2646, 4284, 4572, 2907, 835, 1, 10, 90, 480, 1890, 5292, 10710, 15240, 14535, 8350, 2188]

cp's OEIS Frontend

A091187 Triangle read by rows: T(n,k) is the number of ordered trees with n edges and k branches.

Table of values

List of values