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 A189035 #4 Mar 30 2012 18:57:23 %S A189035 2,3,4,6,9,13,14,18,20,21,22,26,28,29,31,32,33,35,39,41,42,44,45,46, %T A189035 49,50,51,53,56,60,62,63,65,66,67,70,71,72,74,78,79,80,82,85,89,90,94, %U A189035 96,97,99,100,101,104,105,106,108,112,113,114,116,119,123,125,126,127 %N A189035 Positions of 1 in the zero-one sequence s based on the sequence lower Wythoff sequence p: s(p(k))=s(k); s(q(k))=1-s(k); s(1)=0, q=(upper Wythoff sequence). %t A189035 (See A095076.) %Y A189035 Cf. A095076, A189034. %K A189035 nonn %O A189035 1,1 %A A189035 _Clark Kimberling_, Apr 15 2011