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 A070158 #4 May 11 2007 03:00:00 %S A070158 133,403,583,713,817,2077,2623,2923,4453,4717,5311,5773,7093,7747,9313 %N A070158 Duplicate of A055940. %K A070158 dead %O A070158 1,1