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A207594 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

%I A207594 #7 Jul 22 2025 20:37:29
%S A207594 25,625,1250,5000,18150,70800,263550,1018700,3824100,14714500,
%T A207594 55475900,212837550,804627850,3080577400,11668031250,44603903700,
%U A207594 169169362450,645969220100,2452350886150,9356569191650,35546345269650,135539969562250
%N A207594 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 1 1 vertically.
%C A207594 Row 7 of A207589
%H A207594 R. H. Hardin, <a href="/A207594/b207594.txt">Table of n, a(n) for n = 1..210</a>
%F A207594 Empirical: a(n) = 25*a(n-2) +2*a(n-3) -199*a(n-4) +632*a(n-6) -30*a(n-7) -879*a(n-8) +28*a(n-9) +548*a(n-10) -139*a(n-12) -4*a(n-13) +10*a(n-14) for n>16
%e A207594 Some solutions for n=4
%e A207594 ..1..0..1..0....0..1..1..1....0..1..0..1....0..1..0..0....1..0..1..0
%e A207594 ..0..1..0..1....1..0..1..1....1..1..1..0....1..1..1..1....0..1..1..0
%e A207594 ..1..0..1..1....1..1..0..0....1..0..1..0....1..0..1..1....1..1..0..0
%e A207594 ..0..1..0..0....0..1..1..1....0..1..0..0....0..1..0..0....1..0..1..0
%e A207594 ..1..0..1..0....1..0..1..1....1..1..1..0....1..1..1..1....0..1..1..0
%e A207594 ..0..1..0..0....0..1..0..0....1..0..1..0....1..0..1..0....1..1..0..0
%e A207594 ..1..1..1..0....1..0..1..1....0..1..0..0....0..1..0..0....1..0..1..0
%K A207594 nonn
%O A207594 1,1
%A A207594 _R. H. Hardin_ Feb 19 2012