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%I #6 May 21 2021 15:43:25
%S 0,7,57,946,43568,3624515,621643922,235652502418,182371905958510
%N Number of n X n 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
%C Diagonal of A316448.
%e Some solutions for n=5
%e ..0..0..0..1..0. .0..1..0..0..1. .0..1..1..1..0. .0..1..1..0..1
%e ..1..0..1..1..1. .0..0..0..0..0. .0..0..1..0..0. .1..0..1..0..0
%e ..0..0..1..0..1. .0..1..1..0..0. .1..1..1..1..1. .1..0..0..0..0
%e ..0..1..1..1..1. .0..0..1..0..1. .1..0..1..1..0. .1..1..1..0..1
%e ..1..1..1..0..1. .1..1..1..1..1. .1..0..0..1..1. .0..1..1..0..0
%Y Cf. A316448.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 03 2018
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