%I #6 Oct 20 2020 19:26:05
%S 1,4,13,56,897,20932,930123,73484449,11082127004,2811843090472
%N Number of n X n 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 kingmove adjacent elements, with upper left element zero.
%C Diagonal of A304676.
%e Some solutions for n=5
%e ..0..1..1..1..0. .0..1..1..0..1. .0..1..1..1..1. .0..0..1..1..0
%e ..1..0..1..0..1. .0..1..0..0..0. .1..0..0..0..0. .0..0..1..0..1
%e ..0..1..0..1..0. .0..0..1..1..1. .1..0..1..1..0. .1..1..1..1..0
%e ..0..1..0..1..0. .0..1..0..0..1. .1..0..1..0..1. .1..1..1..1..0
%e ..1..0..1..1..0. .1..0..1..1..0. .1..0..0..1..0. .1..1..1..1..0
%Y Cf. A304676.
%K nonn
%O 1,2
%A _R. H. Hardin_, May 16 2018
