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A208557 Number of 5 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.

%I A208557 #8 Jul 04 2018 08:54:39
%S A208557 12,144,420,2508,10080,50052,221340,1042416,4742628,21989868,
%T A208557 100900800,465657348,2142175548,9872120016,45450619620,209366048652,
%U A208557 964140982560,4440671206788,20451041895900,94190120555184,433792784654052
%N A208557 Number of 5 X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 1 vertically.
%C A208557 Row 5 of A208555.
%H A208557 R. H. Hardin, <a href="/A208557/b208557.txt">Table of n, a(n) for n = 1..210</a>
%F A208557 Empirical: a(n) = a(n-1) + 17*a(n-2) + 6*a(n-3) - 36*a(n-4).
%F A208557 Empirical g.f.: 12*x*(1 + 11*x + 6*x^2 - 36*x^3) / ((1 + x - 3*x^2)*(1 - 2*x - 12*x^2)). - _Colin Barker_, Jul 04 2018
%e A208557 Some solutions for n=4:
%e A208557 ..1..1..0..1....0..1..1..0....0..1..1..0....1..0..1..0....1..1..0..1
%e A208557 ..1..0..1..0....1..1..0..1....0..1..1..1....1..1..0..0....0..1..0..1
%e A208557 ..0..1..0..0....0..1..1..0....0..1..0..0....1..0..1..0....1..1..0..1
%e A208557 ..1..0..1..0....0..1..0..0....0..1..0..1....1..1..0..0....0..1..0..1
%e A208557 ..0..1..0..0....0..1..1..0....0..1..0..0....1..0..1..0....1..1..0..1
%Y A208557 Cf. A208555.
%K A208557 nonn
%O A208557 1,1
%A A208557 _R. H. Hardin_, Feb 28 2012