%I #4 Jun 01 2018 11:00:34
%S 0,3,7,26,1275,5443,222961,10709608,362139243,59746224393
%N Number of nXn 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A305452.
%e Some solutions for n=5
%e ..0..0..0..1..0. .0..1..0..0..1. .0..1..0..0..0. .0..0..0..0..0
%e ..1..0..0..0..1. .0..1..0..0..1. .1..0..0..0..1. .0..1..0..0..1
%e ..0..0..0..0..0. .1..1..0..1..1. .1..1..0..0..0. .0..0..0..0..0
%e ..0..1..0..0..0. .1..1..0..1..0. .1..0..0..0..1. .1..0..0..1..0
%e ..0..0..0..1..1. .0..0..0..0..1. .1..0..0..1..0. .0..0..0..0..0
%Y Cf. A305452.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 01 2018