A338296 Number of non-isomorphic 3-uniform 3-regular hypergraphs on n nodes.

0, 0, 0, 1, 1, 4, 10, 33, 148, 827, 5565, 43886

Offset

1,6

Comments

The nauty function in SageMath is used to generate these hypergraphs.

Links

Table of n, a(n) for n=1..12.

Prog

(Sage) Set(list(hypergraphs.nauty(#edges, #vertices, uniform=3, regular=3))).cardinality()

Crossrefs

Sequence in context: A357799 A149171 A149172 * A105680 A261577 A224217

Adjacent sequences: A338293 A338294 A338295 * A338297 A338298 A338299

Keyword

nonn,hard,more

Author

Saad El-Zanati, Oct 21 2020

Status

approved