%I #8 Sep 13 2013 20:16:48
%S 64,4096,257984,14747432,818683176,44773333904,2433605818736,
%T 131915396019176,7141796191458336,386438860570431088,
%U 20904827192341195056,1130743207081341112720,61158890053428524474288
%N Number of nX3 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X4 0..3 array.
%C Column 3 of A229105.
%H R. H. Hardin, <a href="/A229102/b229102.txt">Table of n, a(n) for n = 1..37</a>
%e Some solutions for n=4
%e ..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
%e ..2..2..0....0..3..3....0..1..2....0..0..3....0..1..0....0..3..3....0..0..1
%e ..3..1..3....3..3..2....3..2..1....1..1..3....3..3..3....1..0..2....1..1..2
%e ..0..3..3....1..0..0....0..0..2....2..1..1....0..1..2....3..1..2....3..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Sep 13 2013
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