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A208779 Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.

%I A208779 #8 Jul 06 2018 17:11:44
%S A208779 42,1764,252,420,672,1092,1764,2856,4620,7476,12096,19572,31668,51240,
%T A208779 82908,134148,217056,351204,568260,919464,1487724,2407188,3894912,
%U A208779 6302100,10197012,16499112,26696124,43195236,69891360,113086596
%N A208779 Number of n X 7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 1 and 1 1 1 vertically.
%C A208779 Column 7 of A208780.
%H A208779 R. H. Hardin, <a href="/A208779/b208779.txt">Table of n, a(n) for n = 1..210</a>
%F A208779 Empirical: a(n) = a(n-1) + a(n-2) for n>4.
%F A208779 Empirical g.f.: 42*x*(1 + 41*x - 37*x^2 - 38*x^3) / (1 - x - x^2). - _Colin Barker_, Jul 06 2018
%e A208779 Some solutions for n=4:
%e A208779 ..1..0..1..0..1..0..1....1..1..1..0..1..0..0....1..1..0..1..0..1..0
%e A208779 ..0..1..0..1..0..1..1....1..0..1..0..1..0..0....1..0..1..0..1..0..1
%e A208779 ..1..0..1..0..1..0..0....0..1..0..1..0..1..1....0..1..0..1..0..1..0
%e A208779 ..0..1..0..1..0..1..1....1..0..1..0..1..0..0....1..0..1..0..1..0..1
%Y A208779 Cf. A208780.
%K A208779 nonn
%O A208779 1,1
%A A208779 _R. H. Hardin_, Mar 01 2012