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 A094719 #2 Apr 30 2014 01:30:10 %S A094719 1,2,4,6,11,16,29,43,78,119,217,340,624,1000,1847,3015,5602,9282, %T A094719 17341,29084,54605,92512,174455,298110,564332,971562,1845363,3198129, %U A094719 6092037,10621152,20282470,35554558,68042536,119874493,229840129 %N A094719 Sum[k=1..n, T(k,n-k+1)], where T is array A094718. %K A094719 nonn %O A094719 1,2 %A A094719 _Ralf Stephan_, May 23 2004