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%I #4 Jun 05 2018 18:28:12
%S 8,5,8,15,38,102,247,617,1559,3892,9739,24416,61132,153073,383397,
%T 960157,2404528,6021899,15081066,37768418,94586143,236878625,
%U 593231091,1485669328,3720663535,9317911688,23335483576,58440647945,146356910517
%N Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 7 or 8 king-move adjacent elements, with upper left element zero.
%C Column 4 of A305586.
%H R. H. Hardin, <a href="/A305582/b305582.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +2*a(n-2) +5*a(n-3) -2*a(n-5) -4*a(n-6) for n>8
%e Some solutions for n=5
%e ..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .0..1..1..1
%e ..0..0..0..0. .0..0..1..0. .0..0..1..0. .0..1..0..0. .1..0..1..1
%e ..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .1..1..1..1
%e ..0..1..1..0. .0..0..0..0. .0..0..1..0. .0..1..0..0. .1..1..0..1
%e ..0..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..0. .1..1..1..0
%Y Cf. A305586.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jun 05 2018
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