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 A179831 #3 Mar 31 2012 13:21:20 %S A179831 0,0,0,0,1,0,0,1,1,0,0,0,1,0,1,1,0,0,0,1,1,0,0,0,1,0,0,0,1,0,0,0,1,0, %T A179831 0,0,0,0,0,1,1,0,0,0,0,0,0,1,1,0,0,0,0,0,1,1,0,0,0,0,1,0,0,0,0,0,0,0, %U A179831 0,0,0,1,0,0,0,0,0,0,1,0,0,1,1,1,0,0,0,0,0,1,0,1,1,0,0,0,0,0,0,0,1,1 %N A179831 Quadrisection of the fourth central column of triangle A122242, a(n) = A179830((4*n)+1). %C A179831 Conjecture: the last zero (119th) occurs at n=164, after which only ones occur. %H A179831 A. Karttunen, <a href="/A179831/b179831.txt">Table of n, a(n) for n = 1..256</a> %F A179831 a(n) = A179830((4*n)+1). %Y A179831 Cf. A179832-A179834, and also A179771, A179776. %K A179831 nonn %O A179831 1,1 %A A179831 _Antti Karttunen_, Aug 03 2010