A380360 - cp's OEIS frontend

A380360 Number of embeddings on the sphere of Halin graphs on n unlabeled nodes up to orientation-preserving homeomorphisms.

n	a(n)
1	0
2	0
3	0
4	1
5	1
6	2
7	2
8	4
9	7
10	16
11	32
12	76
13	181
14	443
15	1098
16	2793
17	7127
18	18458
19	48128
20	126580
21	334955
22	892187
23	2388674
24	6428489
25	17377599
26	47174939
27	128555088
28	351580903
29	964696719
30	2655197386
31	7329051870
32	20284610084
33	56283140111
34	156537249660
35	436338547904
36	1218824493990
37	3411297202411

[0, 0, 0, 1, 1, 2, 2, 4, 7, 16, 32, 76, 181, 443, 1098, 2793, 7127, 18458, 48128, 126580, 334955, 892187, 2388674, 6428489, 17377599, 47174939, 128555088, 351580903, 964696719, 2655197386, 7329051870, 20284610084, 56283140111, 156537249660, 436338547904, 1218824493990, 3411297202411]

cp's OEIS Frontend

A380360 Number of embeddings on the sphere of Halin graphs on n unlabeled nodes up to orientation-preserving homeomorphisms.

Table of values

List of values