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 A119981 #2 Mar 30 2012 18:40:03
%S A119981 1,1,1,1,1,1,1,0,1,1,1,1,1,1,0,1,0,1,1,0,1,1,1,0,1,1,0,1,0,0,1,1,1,1,
%T A119981 1,1,0,0,0,0,1,1,0,1,1,0,0,1,1,0,1,0,1,1,0,1,0,1,1,0,1,1,1,1,0,0,0,1,
%U A119981 0,0,0,0,0,1,1,0,1,0,1,0
%N A119981 a(n) = 1 iff number congruent to {2, 4} mod 6 is equal to prime minus 3, otherwise a(n)=0.
%C A119981 a(n) = 1 iff A047235(n) + 3 = A086801(n).
%Y A119981 Cf. A047235, A086801.
%K A119981 easy,nonn
%O A119981 1,1
%A A119981 _Giovanni Teofilatto_, Aug 03 2006