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%I #4 Aug 04 2015 07:35:08
%S 104,146,401,896,1800,3358,7680,14924,32431,62992,139263,269060,
%T 591945,1148020,2528065,4893596,10776857,20877196,45968189,89026604,
%U 196045769,379710316,836112021,1619399516,3565959873,6906609340,15208409269
%N Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101
%C Column 3 of A260927
%H R. H. Hardin, <a href="/A260922/b260922.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = a(n-2) +11*a(n-4) +13*a(n-6) -2*a(n-8) -2*a(n-10) +4*a(n-12) for n>15
%e Some solutions for n=4
%e ..0..0..1..1..0....0..1..0..1..1....0..1..0..1..0....0..0..0..1..0
%e ..0..1..0..0..0....0..0..1..0..0....0..0..1..0..1....1..0..1..0..1
%e ..1..0..1..0..1....0..1..0..1..0....0..1..0..1..0....0..1..0..1..0
%e ..0..1..0..1..0....1..0..1..0..1....1..0..1..0..1....1..0..0..0..1
%e ..0..0..1..0..0....0..0..0..1..0....0..0..0..1..0....0..1..0..1..0
%e ..1..1..0..1..0....1..0..1..0..1....0..1..1..0..1....1..0..1..0..1
%Y Cf. A260927
%K nonn
%O 1,1
%A _R. H. Hardin_, Aug 04 2015
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