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 A089885 #5 Mar 30 2012 18:39:22 %S A089885 1,1,0,1,1,0,1,0,0,0,1,1,1,1,0,1,0,1,0,0,0,1,1,0,0,0,0,0,1,0,0,0,0,0, %T A089885 0,0,1,1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,0,0,0,1,1,0,0,1,1,0,0,0,0,0,1,0, %U A089885 0,0,1,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0 %N A089885 Triangle A046899 read mod 2. %K A089885 nonn,tabl %O A089885 0,1 %A A089885 _Benoit Cloitre_, Jan 10 2004