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 A205578 #22 May 08 2018 02:39:13 %S A205578 0,0,0,0,0,0,0,0,1,9,221,14838,3273685 %N A205578 Number of n-node simple graphs having clique number 9. %C A205578 Also, number of n-node simple graphs having independence number 9. - _Andrew Howroyd_, Oct 31 2017 %Y A205578 Column 9 of A263341. %K A205578 nonn,more %O A205578 1,10 %A A205578 _Michael Sollami_, Jan 29 2012 %E A205578 a(12) from _Michael Sollami_, Mar 26 2012 %E A205578 a(13) from _Brendan McKay_, May 07 2018