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%I #4 May 26 2018 18:36:36
%S 2,1,9,10,13,47,71,118,241,453,870,1608,3110,6075,11491,22105,42831,
%T 82321,158514,305836,589983,1137829,2194384,4234349,8170446,15762684,
%U 30415495,58692610,113253536,218539740,421716458,813790085,1570376360
%N Number of nX4 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
%C Column 4 of A305182.
%H R. H. Hardin, <a href="/A305178/b305178.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +a(n-2) +3*a(n-3) -2*a(n-5) -5*a(n-6) -3*a(n-7) -2*a(n-9) +a(n-10) +2*a(n-11) for n>18
%e Some solutions for n=5
%e ..0..1..0..0. .0..1..0..0. .0..0..1..0. .0..0..1..0. .0..1..0..0
%e ..0..0..0..1. .0..0..0..1. .1..0..0..0. .1..0..0..0. .0..0..0..1
%e ..1..0..0..0. .0..0..0..0. .0..0..0..1. .0..0..0..0. .0..0..0..0
%e ..0..0..0..1. .1..0..1..0. .1..0..0..0. .0..0..0..1. .1..0..0..0
%e ..0..1..0..0. .0..0..0..1. .0..0..1..0. .0..1..0..0. .0..0..1..0
%Y Cf. A305182.
%K nonn
%O 1,1
%A _R. H. Hardin_, May 26 2018
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