%I #21 Jun 11 2021 05:12:46
%S 1,1,2,5,17,82,536,5606,95915,2784072,135885572,10977061102,
%T 1448150962596
%N Number of unlabeled, connected graphs on n vertices with no induced subgraph isomorphic to a K_4, where a K_4 is the complete graph on four vertices.
%D Inverse EULER transform of A304124.
%H F. Hüffner, <a href="https://github.com/falk-hueffner/tinygraph">tinygraph</a>, software for generating integer sequences based on graph properties, version 332a754
%K nonn,more
%O 1,3
%A _Jim Nastos_, Jan 24 2003
%E a(10) from the Encyclopedia of Finite Graphs (_Travis Hoppe_ and _Anna Petrone_), Apr 11 2014
%E a(11) and a(12) added using tinygraph by _Falk Hüffner_, Jan 14 2016
%E a(13) from _Brendan McKay_, Jun 11 2021