%I #6 Nov 06 2020 19:14:21
%S 1,4,11,166,1185,26577,342596,9804507,220905716,9470663034,
%T 400580293516
%N Number of n X n 0..1 arrays with every element unequal to 0, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A305281.
%e Some solutions for n=5
%e ..0..0..1..1..0. .0..0..1..1..0. .0..1..0..1..1. .0..0..1..0..1
%e ..1..1..1..0..1. .0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..0
%e ..0..1..0..0..0. .0..0..1..1..1. .0..0..0..0..0. .0..0..1..1..0
%e ..1..0..0..0..1. .0..0..1..1..0. .1..0..0..0..0. .0..0..1..1..1
%e ..0..1..1..1..0. .1..1..0..0..1. .0..1..1..1..1. .0..0..1..0..0
%Y Cf. A305281.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 29 2018