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 A077434 #4 May 11 2007 03:00:00 %S A077434 3,4,8,12,16,36,40,54,63,75,88,104,112,132,135,140,150,195,200,204,208 %N A077434 Duplicate of A076136. %K A077434 dead %O A077434 1,1