A134957 - cp's OEIS frontend

A134957 Number of hyperforests with n unlabeled vertices: analog of A134955 when edges of size 1 are allowed (with no two equal edges).

n	a(n)
0	1
1	2
2	6
3	20
4	75
5	310
6	1422
7	7094
8	37877
9	213610
10	1256422
11	7641700
12	47735075
13	304766742
14	1981348605
15	13079643892
16	87480944764
17	591771554768
18	4042991170169
19	27864757592632
20	193549452132550
21	1353816898675732
22	9529263306483357
23	67457934248821368
24	480019516988969011

[1, 2, 6, 20, 75, 310, 1422, 7094, 37877, 213610, 1256422, 7641700, 47735075, 304766742, 1981348605, 13079643892, 87480944764, 591771554768, 4042991170169, 27864757592632, 193549452132550, 1353816898675732, 9529263306483357, 67457934248821368, 480019516988969011]

cp's OEIS Frontend

A134957 Number of hyperforests with n unlabeled vertices: analog of A134955 when edges of size 1 are allowed (with no two equal edges).

Table of values

List of values