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 A043363 #5 May 11 2007 03:00:00 %S A043363 93,218,343,393,418,443,453,458,463,465,466,467,469,473,493,593 %N A043363 Duplicate of A023736. %K A043363 dead %O A043363 1,1