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 A191265 #4 Mar 30 2012 18:57:31
%S A191265 0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,
%T A191265 2,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,
%U A191265 0,2,0,0,1,0,0,2,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,1,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,0,2,0,0,1,0,0,1,0,1,0,0,1,0
%N A191265 Fixed point of the morphism 0 -> 001, 1 -> 002, 2 -> 01.
%C A191265 See A191265.
%t A191265 t = Nest[Flatten[# /. {0 -> {0, 0, 1}, 1 -> {0, 0, 2}, 2 -> {0, 1}}] &, {0}, 7] (* A191265 *)
%t A191265 Flatten[Position[t, 0]] (* A191266 *)
%t A191265 Flatten[Position[t, 1]] (* A191267 *)
%t A191265 Flatten[Position[t, 2]] (* A191268 *)
%Y A191265 Cf. A191265, A191250.
%K A191265 nonn
%O A191265 1,9
%A A191265 _Clark Kimberling_, May 28 2011