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%I #4 Jul 30 2018 11:28:34
%S 8,128,2032,32256,512096,8130048,129072576,2049155072,32532368768,
%T 516483614720,8199689547520,130178202673152,2066708056827392,
%U 32811039824240640,520907793817967616,8269927777778991104
%N Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Column 4 of A317517.
%H R. H. Hardin, <a href="/A317513/b317513.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 16*a(n-1) -6*a(n-2) +64*a(n-3)
%e Some solutions for n=5
%e ..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..1. .0..0..0..0
%e ..1..1..0..0. .1..1..1..0. .0..0..0..0. .0..0..1..0. .1..0..1..0
%e ..0..0..0..0. .0..1..1..0. .1..0..1..0. .1..0..1..1. .1..0..1..0
%e ..1..0..0..1. .1..1..1..0. .0..1..0..0. .1..1..1..0. .0..0..1..1
%e ..0..0..1..1. .1..0..1..0. .1..0..0..0. .1..1..1..0. .1..0..0..1
%Y Cf. A317517.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 30 2018
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