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 A123537 #1 Dec 06 2006 03:00:00 %S A123537 1,26,1768,225096,51725352,21132802554,15463799747936, %T A123537 20604021770403328,50928019401158515328,237644423948928994197504, %U A123537 2125373296900166452199861760 %N A123537 Erroneous version of A005644 (there appears to be a typo in a(9)). %D A123537 Walsh, T. R. S.; Counting labeled three-connected and homeomorphically irreducible two-connected graphs. J. Combin. Theory Ser. B 32 (1982), no. 1, 1-11. %K A123537 dead %O A123537 4,2