%I #4 Jun 04 2018 12:01:10
%S 1,8,161,7385,767417,180860170,98651246976,122959485595061,
%T 349219952815780064
%N Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
%C Diagonal of A305530.
%e Some solutions for n=5
%e ..0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..1
%e ..0..0..1..0..1. .1..1..0..0..1. .0..0..0..0..0. .0..0..0..0..0
%e ..1..1..1..0..0. .1..1..1..0..1. .1..0..0..1..0. .1..0..0..0..1
%e ..1..1..1..0..0. .0..1..1..0..0. .1..1..1..1..0. .1..0..0..0..1
%e ..0..0..1..1..0. .1..0..1..1..1. .0..0..1..1..1. .1..0..0..1..0
%Y Cf. A305530.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jun 04 2018