%I #4 Jul 31 2018 12:35:06
%S 4,32,228,1619,11510,81814,581541,4133710,29383111,208860377,
%T 1484616765,10552920182,75012037028,533198924617,3790072965570,
%U 26940513998485,191497974085549,1361201723303423,9675664405327884,68776346725332218
%N Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Column 3 of A317565.
%H R. H. Hardin, <a href="/A317560/b317560.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 6*a(n-1) +11*a(n-2) -11*a(n-3) -72*a(n-4) -54*a(n-5) for n>6
%e Some solutions for n=5
%e ..0..0..1. .0..0..1. .0..0..0. .0..1..0. .0..1..1. .0..1..1. .0..1..1
%e ..0..0..0. .0..0..0. .1..0..1. .1..0..0. .0..1..1. .1..1..1. .0..1..0
%e ..0..0..1. .1..0..0. .1..0..0. .1..1..0. .0..1..0. .1..0..1. .1..0..0
%e ..1..0..1. .0..0..1. .1..1..0. .0..0..1. .0..0..1. .1..1..0. .1..0..0
%e ..1..0..1. .0..1..1. .0..1..0. .1..1..0. .1..0..0. .1..1..0. .0..1..1
%Y Cf. A317565.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 31 2018
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