%I #3 May 11 2016 15:11:05
%S 4,21,4,8,4,37,8,44,8,44,0,34,4,44,0,48,0,52
%N Number of nX4 0..1 arrays with exactly n+4-2 having value 1 and no three 1s forming an isosceles triangle.
%C Column 4 of A272973.
%e All solutions for n=3
%e ..1..1..1..0. .1..0..0..0. .0..1..1..1. .0..0..0..1
%e ..0..0..0..1. .1..0..0..0. .1..0..0..0. .0..0..0..1
%e ..0..0..0..1. .0..1..1..1. .1..0..0..0. .1..1..1..0
%Y Cf. A272973.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 11 2016