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%I #5 Mar 31 2012 12:37:11
%S 2,33,1368,67716,3328979,164270604,8094257014,399073153303,
%T 19671060879306,969710249315342,47801400299066037,2356379708874988482,
%U 116157573684573753928,5725991875022057193833,282262740672653624738188
%N Number of nX4 0..6 arrays with no element equal to another within a city block distance of two, and new values 0..6 introduced in row major order
%C Column 4 of A206389
%H R. H. Hardin, <a href="/A206385/b206385.txt">Table of n, a(n) for n = 1..29</a>
%e Some solutions for n=4
%e ..0..1..2..0....0..1..2..3....0..1..2..3....0..1..2..3....0..1..2..0
%e ..2..3..4..5....3..4..5..6....2..3..4..5....2..3..4..5....2..3..4..5
%e ..1..5..6..3....6..2..0..1....1..5..6..0....4..5..0..6....5..6..0..1
%e ..0..2..1..4....0..1..3..2....3..4..1..2....6..1..3..4....4..1..5..6
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 07 2012
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