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 A233779 #9 Jan 18 2014 16:21:35 %S A233779 1,3,5,9,12,16 %N A233779 Main diagonal of A234951. %H A233779 A. Bertagnolli, <a href="http://ajbertagnolli.com/wp-content/uploads/2013/10/sticks2.pdf">The Stick Problem</a>, 2013. %F A233779 a(n) = A234951(n,n). %Y A233779 Cf. A234951, A234373. %K A233779 nonn,more %O A233779 1,2 %A A233779 _Omar E. Pol_, Jan 13 2014