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%I #6 May 21 2018 11:26:14
%S 1,0,1,4,32,351,5057,90756,1956971,49366904,1427680932,46590895869,
%T 1694163054597,67938488277050,2978980898086377,141801848209013050,
%U 7282651452378019772,401410357608479625207,23635996827115264290005
%N Number of labeled hyperforests spanning n vertices without singleton edges.
%F E.g.f.: exp(A030019(x) - x - 1) where A030019(x) is the e.g.f. of A030019.
%e The a(3) = 4 hyperforests are {{1,2,3}}, {{1,3},{2,3}}, {{1,2},{2,3}}, {{1,2},{1,3}}.
%Y Cf. A006126, A030019, A035053, A048143, A054921, A134954, A134955, A134957, A144959, A293993, A293994, A304716, A304717, A304867.
%K nonn
%O 0,4
%A _Gus Wiseman_, May 20 2018
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