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A207687 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically 1

%I #5 Mar 31 2012 12:37:18

%S 25,625,1292,4174,9450,25076,65564,171382,433468,1150747,2968284,

%T 7722348,19756486,52194634,134386810,348854340,903166514,2358439491,

%U 6101183894,15824652924,41067569740,106834907856,276798237718,718012247867

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

%C Row 7 of A207682

%H R. H. Hardin, <a href="/A207687/b207687.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 19 2012

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Last modified July 16 20:46 EDT 2024. Contains 374358 sequences. (Running on oeis4.)