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%I #4 Feb 06 2014 06:14:48
%S 348,2108,12756,79360,485484,2938226,17798196,110739192,677413956,
%T 4099776412,24834317148,154517525352,945214707012,5720532944090,
%U 34652019174732,215602636699512,1318884589408620,7982020049512648
%N Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
%C Column 2 of A237324
%H R. H. Hardin, <a href="/A237318/b237318.txt">Table of n, a(n) for n = 1..210</a>
%F Empirical: a(n) = 1400*a(n-4) -6519*a(n-8) +126*a(n-12) for n>14
%e Some solutions for n=4
%e ..2..1..1....0..1..0....1..2..2....0..2..1....0..2..2....0..1..2....2..2..2
%e ..2..1..2....0..2..1....2..1..0....2..2..2....0..1..1....1..1..0....1..2..2
%e ..0..0..1....2..2..2....0..2..1....2..1..1....2..1..2....2..0..0....2..1..2
%e ..2..0..2....1..2..2....2..2..0....1..2..1....1..1..2....0..1..1....1..1..2
%e ..0..1..1....1..0..1....1..0..2....2..0..1....2..0..2....1..0..1....2..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 06 2014