%I #5 Aug 11 2014 22:46:10

%S 474,4146,35620,308814,2688928,23395998,203035400,1763640726,

%T 15330212940,133229902148,1157405405328,10056256933700,87386040556298,

%U 759320263256056,6597525952465324,57325883121376908,498115222768298578

%N Number of (n+1)X(2+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock

%C Column 2 of A237683

%H R. H. Hardin, <a href="/A237679/b237679.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A237679/a237679.txt">Empirical recurrence of order 67</a>

%F Empirical recurrence of order 67 (see link above)

%e Some solutions for n=3

%e ..0..2..0....0..0..0....2..2..2....0..1..1....2..2..2....2..2..2....0..0..2

%e ..2..0..0....2..2..0....0..0..2....2..0..1....1..2..2....0..0..2....0..0..2

%e ..2..2..1....1..2..2....2..0..2....0..0..1....2..1..2....0..1..1....2..1..2

%e ..2..2..0....0..0..0....1..0..0....1..2..1....2..0..0....2..1..1....2..2..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2014