A193491 - cp's OEIS frontend

A193491 Irregular triangle read by rows: row n gives numbers of rooted trees with n nodes (n >= 1) and omega-valency k (k >= 1).

n	a(n)
1	1
2	1
3	2
4	3
5	1
6	7
7	1
8	1
9	13
10	5
11	1
12	1
13	31
14	9
15	6
16	1
17	1
18	66
19	29
20	11
21	7
22	1
23	1
24	159
25	62
26	42
27	13
28	8
29	1
30	1
31	365
32	181
33	92
34	55
35	15
36	9
37	1
38	1
39	900
40	422
41	294
42	127
43	70
44	17
45	10
46	1
47	1
48	2162
49	1166
50	720
51	435
52	165
53	86
54	19
55	11
56	1
57	1
58	5417
59	2885
60	2119
61	1110
62	608
63	208
64	104
65	21
66	12
67	1
68	1

[1, 1, 2, 3, 1, 7, 1, 1, 13, 5, 1, 1, 31, 9, 6, 1, 1, 66, 29, 11, 7, 1, 1, 159, 62, 42, 13, 8, 1, 1, 365, 181, 92, 55, 15, 9, 1, 1, 900, 422, 294, 127, 70, 17, 10, 1, 1, 2162, 1166, 720, 435, 165, 86, 19, 11, 1, 1, 5417, 2885, 2119, 1110, 608, 208, 104, 21, 12, 1, 1]

cp's OEIS Frontend

A193491 Irregular triangle read by rows: row n gives numbers of rooted trees with n nodes (n >= 1) and omega-valency k (k >= 1).

Table of values

List of values