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A208778 Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.

%I A208778 #12 Jul 06 2018 23:14:32
%S A208778 26,676,156,260,416,676,1092,1768,2860,4628,7488,12116,19604,31720,
%T A208778 51324,83044,134368,217412,351780,569192,920972,1490164,2411136,
%U A208778 3901300,6312436,10213736,16526172,26739908,43266080,70005988,113272068
%N A208778 Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.
%C A208778 Column 6 of A208780.
%H A208778 R. H. Hardin, <a href="/A208778/b208778.txt">Table of n, a(n) for n = 1..210</a>
%F A208778 Empirical: a(n) = a(n-1) + a(n-2) for n>4.
%F A208778 Empirical g.f.: 26*x*(1 + 25*x - 21*x^2 - 22*x^3) / (1 - x - x^2). - _Colin Barker_, Jul 06 2018
%e A208778 Some solutions for n=4:
%e A208778   0 1 0 1 0 0     0 1 0 1 1 0     0 1 0 1 0 1     1 0 1 0 1 1
%e A208778   1 0 1 0 1 0     1 0 1 0 1 1     1 0 1 0 1 0     0 1 0 1 0 0
%e A208778   0 1 0 1 0 1     0 1 0 1 0 0     0 1 0 1 0 0     1 0 1 0 1 1
%e A208778   1 0 1 0 1 0     1 0 1 0 1 1     1 0 1 0 1 1     0 1 0 1 0 0
%Y A208778 Cf. A208780.
%K A208778 nonn
%O A208778 1,1
%A A208778 _R. H. Hardin_, Mar 01 2012