%I #3 May 11 2016 14:53:57
%S 7,100,499,1840,8211,26052,131056,648178,4336294
%N Number of nX7 0..1 arrays with exactly n+7-2 having value 1 and no three 1s forming an isosceles right triangle.
%C Column 7 of A272958.
%e Some solutions for n=5
%e ..1..0..0..0..0..0..1. .1..1..0..0..0..0..1. .0..1..0..0..0..0..0
%e ..0..0..0..0..0..0..0. .0..0..0..0..0..0..1. .0..1..0..0..0..1..1
%e ..1..0..0..1..0..0..1. .1..0..0..0..0..1..0. .0..1..0..0..1..0..0
%e ..1..0..0..0..1..0..1. .1..0..0..0..1..0..0. .0..1..0..0..0..0..1
%e ..1..0..0..0..0..0..1. .0..1..0..0..0..0..1. .0..1..0..0..0..0..1
%Y Cf. A272958.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 11 2016