A034853 - cp's OEIS frontend

A034853 Triangle giving number of trees with n >= 3 nodes and diameter d >= 2.

n	a(n)
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	2
11	2
12	1
13	1
14	2
15	5
16	2
17	1
18	1
19	3
20	8
21	7
22	3
23	1
24	1
25	3
26	14
27	14
28	11
29	3
30	1
31	1
32	4
33	21
34	32
35	29
36	14
37	4
38	1
39	1
40	4
41	32
42	58
43	74
44	42
45	19
46	4
47	1
48	1
49	5
50	45
51	110
52	167
53	128
54	66
55	23
56	5
57	1

[1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 5, 2, 1, 1, 3, 8, 7, 3, 1, 1, 3, 14, 14, 11, 3, 1, 1, 4, 21, 32, 29, 14, 4, 1, 1, 4, 32, 58, 74, 42, 19, 4, 1, 1, 5, 45, 110, 167, 128, 66, 23, 5, 1]

cp's OEIS Frontend

A034853 Triangle giving number of trees with n >= 3 nodes and diameter d >= 2.

Table of values

List of values

n	a(n)
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	2
11	2
12	1
13	1
14	2
15	5
16	2
17	1
18	1
19	3
20	8
21	7
22	3
23	1
24	1
25	3
26	14
27	14
28	11
29	3
30	1
31	1
32	4
33	21
34	32
35	29
36	14
37	4
38	1
39	1
40	4
41	32
42	58
43	74
44	42
45	19
46	4
47	1
48	1
49	5
50	45
51	110
52	167
53	128
54	66
55	23
56	5
57	1

n	a(n)
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	2
11	2
12	1
13	1
14	2
15	5
16	2
17	1
18	1
19	3
20	8
21	7
22	3
23	1
24	1
25	3
26	14
27	14
28	11
29	3
30	1
31	1
32	4
33	21
34	32
35	29
36	14
37	4
38	1
39	1
40	4
41	32
42	58
43	74
44	42
45	19
46	4
47	1
48	1
49	5
50	45
51	110
52	167
53	128
54	66
55	23
56	5
57	1

n	a(n)
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	2
11	2
12	1
13	1
14	2
15	5
16	2
17	1
18	1
19	3
20	8
21	7
22	3
23	1
24	1
25	3
26	14
27	14
28	11
29	3
30	1
31	1
32	4
33	21
34	32
35	29
36	14
37	4
38	1
39	1
40	4
41	32
42	58
43	74
44	42
45	19
46	4
47	1
48	1
49	5
50	45
51	110
52	167
53	128
54	66
55	23
56	5
57	1