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 A022156 #9 Sep 30 2017 02:35:05 %S A022156 3,3,9,11,1,3,33,43,1,3,1,11,1,3,129,171,1,3,1,11,1,3,1,43,1,3,1,11,1, %T A022156 3,513,683,1,3,1,11,1,3,1,43,1,3,1,11,1,3,1,171,1,3,1,11,1,3,1,43,1,3, %U A022156 1,11,1,3,2049,2731,1,3,1,11,1,3,1,43,1,3,1,11,1,3,1,171,1,3,1,11,1,3,1,43,1 %N A022156 Difference sequence of A020991. %H A022156 J. Brillhart and P. Morton, <a href="http://www.maa.org/programs/maa-awards/writing-awards/a-case-study-in-mathematical-research-the-golay-rudin-shapiro-sequence">A case study in mathematical research: the Golay-Rudin-Shapiro sequence</a>, Amer. Math. Monthly, 103 (1996) 854-869. %Y A022156 Cf. A020986, A020991. %K A022156 nonn %O A022156 0,1 %A A022156 _Robert G. Wilson v_