%I #6 May 03 2020 15:46:56
%S 0,4,129,10679,3214459,3328434344,11799327975543,143597352796799615,
%T 5998900161419245960408
%N Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 kingmove adjacent elements, with upper left element zero.
%C Diagonal of A298280.
%e Some solutions for n=4
%e ..0..0..0..0. .0..0..1..0. .0..1..0..1. .0..0..1..0. .0..1..0..1
%e ..0..1..1..0. .0..1..1..0. .0..1..1..0. .1..1..1..0. .1..0..1..0
%e ..0..0..1..0. .0..1..1..0. .1..0..0..1. .0..0..1..0. .1..0..1..0
%e ..1..1..0..0. .1..0..1..0. .1..1..0..0. .0..1..0..1. .0..0..0..1
%Y Cf. A298280.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 16 2018
