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 A030660 #1 Dec 11 1999 03:00:00 %S A030660 2,5,3,4,2,3,8,2,15,10,4,9,4,4,3,60,6,3,4,2,11,6,9,1483,6,3,5,8,3 %N A030660 Erroneous version of A046068. %K A030660 dead %O A030660 1,1