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%I #4 Apr 28 2018 09:20:38
%S 5,17,15,28,44,64,90,132,204,312,466,688,1024,1540,2318,3472,5184,
%T 7748,11606,17396,26052,38984,58338,87340,130788,195824,293146,438824,
%U 656952,983564,1472534,2204504,3300280,4940796,7396894,11073932,16578716
%N Number of nX4 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.
%C Column 4 of A303682.
%H R. H. Hardin, <a href="/A303678/b303678.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +a(n-4) +a(n-5) for n>8
%e Some solutions for n=5
%e ..0..0..0..1. .0..0..0..0. .0..1..1..1. .0..1..1..1. .0..1..1..1
%e ..0..0..0..0. .0..0..0..0. .0..0..1..1. .1..1..1..1. .1..1..1..1
%e ..1..0..0..0. .0..0..0..1. .0..0..0..1. .1..1..1..1. .1..1..1..1
%e ..1..1..0..0. .0..0..1..1. .0..0..0..0. .1..1..1..1. .0..1..1..1
%e ..1..1..1..0. .0..1..1..1. .1..0..0..0. .0..1..1..0. .0..0..1..1
%Y Cf. A303682.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 28 2018
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