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%I #6 Jun 15 2020 14:58:04
%S 1,7,20,174,7013,388453,61726046,23457257837,21977588184244
%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A299806.
%e Some solutions for n=5
%e ..0..1..1..1..0. .0..1..1..1..0. .0..0..0..0..1. .0..0..0..0..0
%e ..0..0..0..0..0. .1..0..0..0..0. .1..1..1..1..1. .1..1..1..1..1
%e ..0..0..0..0..0. .1..0..0..0..0. .0..1..1..1..1. .0..1..1..1..0
%e ..0..0..0..0..0. .0..0..0..0..0. .0..1..1..1..1. .0..1..1..1..0
%e ..0..1..1..1..0. .1..1..1..1..0. .1..0..0..0..1. .1..0..0..0..1
%Y Cf. A299806.
%K nonn
%O 1,2
%A _R. H. Hardin_, Feb 19 2018
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