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Number of nX7 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
1

%I #4 Jan 18 2016 20:11:48

%S 15,450,2829,32303,128441,1117207,3696933,30649693,90914453,784186403,

%T 2141552549,19980003873,50876741513,520249434779,1246972578665,

%U 13942225071453,31756214522413,383944691019691,839150694697605

%N Number of nX7 0..1 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.

%C Column 7 of A267644.

%H R. H. Hardin, <a href="/A267643/b267643.txt">Table of n, a(n) for n = 1..96</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A267644.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 18 2016