A370771 - cp's OEIS frontend

A370771 Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a front.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	1
10	1
11	4
12	2
13	1
14	1
15	1
16	9
17	6
18	2
19	1
20	1
21	1
22	20
23	21
24	6
25	2
26	1
27	1
28	1
29	48
30	83
31	25
32	6
33	2
34	1
35	1
36	1
37	115
38	356
39	126
40	25
41	6
42	2
43	1
44	1
45	1
46	286
47	1599
48	745
49	135
50	25
51	6
52	2
53	1
54	1
55	1
56	719
57	7434
58	4784
59	895
60	135
61	25
62	6
63	2
64	1
65	1
66	1
67	1842
68	35381
69	32372
70	6846
71	915
72	135
73	25
74	6
75	2
76	1
77	1

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 4, 2, 1, 1, 1, 9, 6, 2, 1, 1, 1, 20, 21, 6, 2, 1, 1, 1, 48, 83, 25, 6, 2, 1, 1, 1, 115, 356, 126, 25, 6, 2, 1, 1, 1, 286, 1599, 745, 135, 25, 6, 2, 1, 1, 1, 719, 7434, 4784, 895, 135, 25, 6, 2, 1, 1, 1, 1842, 35381, 32372, 6846, 915, 135, 25, 6, 2, 1, 1]

cp's OEIS Frontend

A370771 Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a front.

Table of values

List of values