This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A128953 #7 Jan 17 2020 03:30:25
%S A128953 1,1,6,12,85,471,5373,75145,1543382,41554738
%N A128953 Number of 3-connected bipartite graphs on n unlabeled nodes.
%e A128953 a(6) = 1 because the complete bipartite graph K_{3,3} is the only 3-connected bipartite graph on 6 vertices.
%Y A128953 Cf. A005142.
%K A128953 nonn,more
%O A128953 6,3
%A A128953 _Gordon F. Royle_, May 10 2007