A370773 - cp's OEIS frontend

A370773 Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a hedron with a designated front.

n	a(n)
0	0
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	5
12	2
13	1
14	0
15	1
16	12
17	7
18	2
19	1
20	0
21	1
22	30
23	26
24	7
25	2
26	1
27	0
28	1
29	74
30	110
31	30
32	7
33	2
34	1
35	0
36	1
37	188
38	481
39	159
40	30
41	7
42	2
43	1
44	0
45	1
46	478
47	2209
48	940
49	168
50	30
51	7
52	2
53	1
54	0
55	1
56	1235
57	10379
58	6093
59	1104
60	168
61	30
62	7
63	2
64	1
65	0
66	1
67	3214
68	49868
69	41367
70	8428
71	1124
72	168
73	30
74	7
75	2
76	1
77	0

[0, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 5, 2, 1, 0, 1, 12, 7, 2, 1, 0, 1, 30, 26, 7, 2, 1, 0, 1, 74, 110, 30, 7, 2, 1, 0, 1, 188, 481, 159, 30, 7, 2, 1, 0, 1, 478, 2209, 940, 168, 30, 7, 2, 1, 0, 1, 1235, 10379, 6093, 1104, 168, 30, 7, 2, 1, 0, 1, 3214, 49868, 41367, 8428, 1124, 168, 30, 7, 2, 1, 0]

cp's OEIS Frontend

A370773 Triangle read by rows: T(n,k) is the number of k-trees with n unlabeled nodes rooted at a hedron with a designated front.

Table of values

List of values