%I #4 Jun 28 2018 15:29:39
%S 1,8,42,354,7973,205946,10464990,1363011634,297013482603,
%T 129932663244527
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A316289.
%e Some solutions for n=5
%e ..0..0..0..1..0. .0..1..1..1..1. .0..0..0..0..1. .0..0..1..1..0
%e ..0..0..0..1..1. .1..0..1..1..1. .0..0..0..0..0. .1..0..1..1..1
%e ..0..0..0..0..0. .0..1..1..1..1. .1..0..0..0..0. .1..1..1..1..1
%e ..0..0..0..1..0. .1..0..1..1..1. .1..1..0..1..1. .1..1..0..0..1
%e ..1..1..1..0..1. .0..1..1..1..0. .0..0..0..1..0. .1..1..1..0..1
%Y Cf. A316289.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 28 2018
|