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 A045845 #2 May 16 2003 03:00:00 %S A045845 1,2,5,6,11,13,17,22,27,29,37,44,44,55,59,68,71,81,82,102,97,112,109 %N A045845 Duplicate of A002133. %K A045845 dead %O A045845 3,2