%I #4 Feb 14 2014 07:56:51
%S 453088,14144254,466228162,16245005586,524709935082,17294230106544,
%T 584650294058044,19984640052472780,658291169914743394,
%U 21904913699484406216,739180534221657607156,25003488678659571481024
%N Number of (n+1)X(7+1) 0..2 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 7 of A237868
%H R. H. Hardin, <a href="/A237867/b237867.txt">Table of n, a(n) for n = 1..14</a>
%e Some solutions for n=1
%e ..0..0..0..1..2..2..1..2....0..1..0..2..1..0..1..1....0..1..0..1..1..1..2..0
%e ..0..2..1..1..1..1..1..2....2..0..0..1..2..2..1..2....0..1..1..0..1..2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 14 2014