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 A126748 #11 Aug 15 2019 16:53:59 %S A126748 0,0,0,0,0,1,5,73,1908,110140,13779220 %N A126748 Number of connected graphs on n nodes with clique number 6. %H A126748 Keith M. Briggs, <a href="http://keithbriggs.info/cgt.html">Combinatorial Graph Theory</a> %Y A126748 A diagonal of triangle in A126744. %K A126748 nonn,hard,more %O A126748 1,7 %A A126748 _N. J. A. Sloane_, Feb 18 2007 %E A126748 a(11) from _Michael Sollami_, Jan 29 2012