%I #4 Jan 20 2016 12:35:15

%S 20,400,8000,102954,1234716,13126812,132388406,1271314080,11831791048,

%T 107394660068,957081246026,8408442934462,73058790472446,

%U 629272663467509,5382292144211926,45776729662954256,387532677732355814

%N Number of 7Xn 0..1 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

%C Row 7 of A267788.

%H R. H. Hardin, <a href="/A267793/b267793.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

%Y Cf. A267788.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 20 2016