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Number of (n+1)X(6+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise
1

%I #4 Jan 17 2014 15:04:48

%S 2866,48848,681546,8974124,112308598,1374773712,16500794898,

%T 195824119834,2302059880080,26894984140858,312669763548608,

%U 3622535721245624,41859583600520154,482790572082345160,5560373260715567600

%N Number of (n+1)X(6+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

%C Column 6 of A235962

%H R. H. Hardin, <a href="/A235960/b235960.txt">Table of n, a(n) for n = 1..126</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 17 2014