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%I #8 Apr 20 2020 00:08:52
%S 0,7,160,18956,8641499,15440641209,109086632521219,
%T 3041266904462686586,334635446051408230633599,
%U 145323559617043972823631878181,249082491936418607489659470348823605
%N Number of n X n 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Diagonal of A316953.
%H R. H. Hardin, <a href="/A316947/b316947.txt">Table of n, a(n) for n = 1..12</a>
%e Some solutions for n=5
%e ..0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..0
%e ..0..1..0..0..1. .0..1..0..1..0. .0..1..0..0..0. .0..1..0..1..0
%e ..1..1..0..1..0. .1..0..1..0..1. .1..0..0..1..1. .1..1..1..1..1
%e ..0..1..1..1..0. .0..1..1..1..0. .1..1..0..0..1. .1..0..0..0..0
%e ..1..1..0..0..1. .1..0..0..0..1. .0..1..0..1..0. .0..1..0..1..0
%Y Cf. A316953.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jul 17 2018
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