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A301481 Number of unlabeled uniform hypergraphs spanning n vertices. 5

%I

%S 1,1,1,2,4,12,58

%N Number of unlabeled uniform hypergraphs spanning n vertices.

%C A hypergraph is uniform if all edges have the same size.

%e Non-isomorphic representatives of the a(4) = 12 hypergraphs:

%e {{1,2,3,4}}

%e {{1,2},{3,4}}

%e {{1},{2},{3},{4}}

%e {{1,3,4},{2,3,4}}

%e {{1,3},{2,4},{3,4}}

%e {{1,4},{2,4},{3,4}}

%e {{1,2,4},{1,3,4},{2,3,4}}

%e {{1,2},{1,3},{2,4},{3,4}}

%e {{1,4},{2,3},{2,4},{3,4}}

%e {{1,3},{1,4},{2,3},{2,4},{3,4}}

%e {{1,2,3},{1,2,4},{1,3,4},{2,3,4}}

%e {{1,2},{1,3},{1,4},{2,3},{2,4},{3,4}}

%Y Cf. A003465, A038041, A055621, A298422, A301920, A301922, A306017-A306021.

%K nonn,more

%O 0,4

%A _Gus Wiseman_, Jun 19 2018

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Last modified April 19 08:54 EDT 2019. Contains 322241 sequences. (Running on oeis4.)