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A208368 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically 1

%I #5 Mar 31 2012 12:37:22

%S 42,1764,23010,275769,3759574,47178453,570085195,6982331490,

%T 85099853444,1028266559100,12425457898119,150136148402568,

%U 1811048511383583,21834166758810375,263223641419702766,3172338713859879000

%N Number of nX7 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 0 1 0 vertically

%C Column 7 of A208369

%H R. H. Hardin, <a href="/A208368/b208368.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..1..1..1..1..0..1..0....1..0..1..0..1..1..0....0..1..1..1..1..0..1

%e ..1..0..1..1..0..1..0....1..1..0..1..1..0..0....1..1..0..1..0..1..0

%e ..1..1..0..1..0..1..0....0..1..1..1..1..1..0....1..1..1..1..1..1..0

%e ..0..1..0..1..0..1..0....1..1..1..1..0..1..0....1..0..1..1..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 25 2012

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Last modified April 24 16:34 EDT 2024. Contains 371961 sequences. (Running on oeis4.)