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 A087250 #3 May 11 2007 03:00:00 %S A087250 1,2,5,13,26,29,37,41,61,73,74,101,109,113,122,137,146,157,173,181,193 %N A087250 Duplicate of A065301. %K A087250 dead %O A087250 1,2