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 A179770 #5 Jul 19 2017 21:54:20 %S A179770 0,0,1,1,1,1,1,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,1,1,0, %T A179770 1,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,0,1,0,1,1,1,0,1,0,1,0,1,0, %U A179770 1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,1,1,0,1,0,1,0,1,0,1,0,1,1,1,0,1,0,1,0 %N A179770 The fourth central column of triangle A122242, i.e., A179761(4), A179761(11), A179761(20), A179761(31), ... %H A179770 A. Karttunen, <a href="/A179770/b179770.txt">Table of n, a(n) for n = 1..1024</a> %F A179770 a(n) = A179761(A028875(n+2)). %Y A179770 Cf. A179771-A179774, and also A179775, A179830. %K A179770 nonn %O A179770 1,1 %A A179770 _Antti Karttunen_, Aug 03 2010