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 A038010 #3 Mar 30 2012 17:37:06 %S A038010 1746,414,486,270,360,1764,86,972,328,210,144,546,270,104,630,130,936, %T A038010 230,130,72,432,566,420,120,550,54,176,540,34,290,220,630,60,66,740, %U A038010 160,32,328,140,634,66,110,130,140,994,156,204,486,34,770 %N A038010 Differences of A038009. %K A038010 nonn,base %O A038010 1,1 %A A038010 _Christian G. Bower_