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 A158461 #5 Sep 08 2013 13:31:37 %S A158461 0,0,0,2,1,0,1,0,2,2,2,1,1,2,0,2,1,1,1,0,2,1,2,1,0,0,0,1,2,0,1,0,2,2, %T A158461 2,1,0,2,0,2,1,1,1,0,0,1,2,1,0,0,0,2,1,0,1,0,2,2,0,0,1,2,0,2,1,1,1,0, %U A158461 2,1,2,1,0,0,0,2,2,0,1,0,2,2,2,1,0,2,0,2,1,1,1,2,0,1,2,1,0,0,0,2 %N A158461 A102370(n) mod 3 . %K A158461 nonn,less,base %O A158461 0,4 %A A158461 _Philippe Deléham_, Mar 19 2009