%I #4 Jul 31 2018 12:34:14
%S 1,8,228,20312,5721314,5059110002,14085130453968,123418919972164971,
%T 3402595745984823716385
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A317565.
%e Some solutions for n=5
%e ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
%e ..0..0..1..1..1. .0..0..1..0..0. .0..0..1..0..0. .0..0..1..1..1
%e ..0..1..1..1..0. .1..0..0..1..1. .1..1..1..1..1. .0..1..1..1..0
%e ..1..0..1..1..1. .0..0..0..1..0. .0..1..0..1..1. .0..0..1..0..1
%e ..1..0..0..1..0. .0..0..1..1..0. .1..1..0..1..1. .1..0..0..0..0
%Y Cf. A317565.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 31 2018
|