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%I #9 Jun 22 2013 16:05:40
%S 1,1,1,1,1,1,1,1,2,1,1,1,1,1,2,1,1,1,2,2,1,1,2,1,2,1,1,1,1,1,1,1,2,1,
%T 1,1,1,1,1,1,2,2,1,1,1,1,2,1,2,1,2,1,2,1,1,2,2,2,2,1,1,1,2,1,1,1,1,1,
%U 2,1,1,1,2,2,1,1,2,2,1,1,2,1,2,1,2,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1
%N Denominators of the 1/4-Pascal triangle (by row), excluding 4's.
%e 1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...
%Y Cf. A046563.
%K tabf,nonn
%O 1,9
%A _Mohammad K. Azarian_
%E More terms from _James A. Sellers_, Dec 14 1999