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%I #4 Apr 21 2018 12:49:55
%S 8,6,11,36,50,128,439,1085,2431,6452,17455,43514,108524,281615,726261,
%T 1839731,4685152,12025643,30754258,78396104,200278695,512290781,
%U 1308785863,3342222476,8540451095,21826102586,55761123412,142456533311
%N Number of 4Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C Row 4 of A303314.
%H R. H. Hardin, <a href="/A303316/b303316.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-1) +a(n-2) +5*a(n-3) +9*a(n-4) -3*a(n-5) -7*a(n-6) -2*a(n-7) for n>11
%e Some solutions for n=5
%e ..0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..1..0..1..0
%e ..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0
%e ..0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..0..0
%e ..0..1..1..1..0. .0..0..0..1..0. .0..0..0..1..0. .0..1..0..1..1
%Y Cf. A303314.
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 21 2018
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