A110101 - cp's OEIS frontend

A110101 a(n) is the number of 3-regular 3-hypergraphs on n labeled vertices. (In a 3-hypergraph, each hyper-edge is a proper 3-set; 3-regular implies that each vertex is in exactly 3 hyperedges.)

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	12
6	330
7	11205
8	505505
9	28787052
10	2024844444
11	172592502570
12	17545270969545
13	2098273032696720
14	291739927315433454
15	46676360010342811203

[1, 0, 0, 0, 1, 12, 330, 11205, 505505, 28787052, 2024844444, 172592502570, 17545270969545, 2098273032696720, 291739927315433454, 46676360010342811203]

cp's OEIS Frontend

A110101 a(n) is the number of 3-regular 3-hypergraphs on n labeled vertices. (In a 3-hypergraph, each hyper-edge is a proper 3-set; 3-regular implies that each vertex is in exactly 3 hyperedges.)

Table of values

List of values