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 A132149 #5 Jan 30 2011 16:23:03 %S A132149 1,4,6,11,10,20,14 %N A132149 Duplicate of A129235. %K A132149 dead %O A132149 0,2