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 A084332 #5 May 11 2007 03:00:00 %S A084332 1,2,4,7,3,8,14,5,12,20,6,16,27,9,21,34,10,25,41,11,28,47,13,33,54,15 %N A084332 Duplicate of A081145. %K A084332 dead %O A084332 0,2