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 A061562 #5 Mar 22 2011 02:22:07 %S A061562 0,1,3,5,9,12,16,19,25,29,35,39,46,51,56,60 %N A061562 Old, obsolete version of A003075. %K A061562 dead %O A061562 1,3