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 A050485 #6 May 11 2007 03:00:00 %S A050485 1,13,76,300,930,2442,5676,12012,23595,43615,76648,129064,209508 %N A050485 Duplicate of A034265. %K A050485 dead %O A050485 0,2