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