A235571 - OEIS

%I #4 Jan 12 2014 07:12:26

%S 2866,71710,2000524,63238254,2119256572,70251672970,2203799654900,

%T 64128617114034,1724826332820910,43023210887485066,

%U 1001647756295348774,21914082439957425818,453491212799910229890,8928317119133544527332

%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 rowwise and columnwise

%C Column 6 of A235573

%H R. H. Hardin, <a href="/A235571/b235571.txt">Table of n, a(n) for n = 1..68</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 12 2014