|
%I #4 Jan 17 2014 15:05:26
%S 7560,176420,3311312,59037352,997114552,16500794898,267591383236,
%T 4292672074802,68206975579218,1077169051968340,16927257076479028,
%U 265101072902208072,4140802701438271022,64556448436549241648
%N Number of (n+1)X(7+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 7 of A235962
%H R. H. Hardin, <a href="/A235961/b235961.txt">Table of n, a(n) for n = 1..20</a>
%e Some solutions for n=2
%e ..0..0..1..0..1..0..0..1....0..0..1..1..0..0..0..1....0..0..0..0..0..0..0..0
%e ..0..0..0..0..0..0..1..1....0..1..0..0..1..1..1..0....0..1..0..0..0..1..0..1
%e ..0..1..0..0..0..1..1..1....0..0..0..0..0..1..0..0....0..0..0..0..1..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 17 2014
| 