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A206993 Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 1 1 1 vertically 1

%I

%S 81,6561,80070,2371090,60684900,1482397764,37849652838,954576893140,

%T 24031904480250,606711286710758,15303296459686032,385968153194641688,

%U 9736392679516458222,245594233526815556440,6194918451958959626262

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

%C Column 7 of A206994

%H R. H. Hardin, <a href="/A206993/b206993.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 14 2012

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Last modified January 23 21:56 EST 2022. Contains 350515 sequences. (Running on oeis4.)