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%I #4 Jul 04 2015 21:39:39
%S 104,167,256,385,612,1108,1708,2700,4660,7378,11350,19232,31280,48032,
%T 80218,131336,202926,335260,550228,857598,1403502,2304624,3618252,
%U 5883582,9653232,15248198,24687220,40439420,64203790,103643474,169453708
%N Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 or 00000101
%C Column 3 of A259770
%H R. H. Hardin, <a href="/A259767/b259767.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 3*a(n-3) +3*a(n-6) +4*a(n-7) -2*a(n-9) +2*a(n-11) -8*a(n-13) +6*a(n-14) for n>17
%e Some solutions for n=4
%e ..0..0..1..0..0....0..1..0..0..0....0..0..1..0..1....0..0..0..0..0
%e ..0..0..0..0..0....0..0..0..0..1....0..0..0..0..0....0..0..0..1..0
%e ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..1..0..0
%e ..0..0..1..0..0....0..1..0..0..0....1..0..0..1..0....0..0..0..0..0
%e ..0..1..0..0..0....1..0..0..0..1....0..0..0..0..1....0..0..0..0..0
%e ..0..0..0..0..0....0..0..0..0..0....1..0..0..0..0....1..0..1..0..0
%Y Cf. A259770
%K nonn
%O 1,1
%A _R. H. Hardin_, Jul 04 2015
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