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 A043329 #5 May 11 2007 03:00:00 %S A043329 2,5,6,7,11,14,15,16,18,19,21,22,29,32,33,34,38,41,42,43,45 %N A043329 Duplicate of A023699. %K A043329 dead %O A043329 1,1