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 A065041 #4 May 11 2007 03:00:00 %S A065041 3,5,7,11,13,17,19,29,31,37,41,53,61,73,95,97,109,127,143,157,181,209 %N A065041 Duplicate of A065393. %K A065041 dead %O A065041 1,1