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%I #5 Mar 31 2012 12:37:12
%S 16,1216,11264,127008,1454810,17277556,208563912,2543024548,
%T 31198656992,384076975680,4737250216482,58497114248288,
%U 722787914355820,8933909144447138,110448738176212632,1365616810440861728
%N Number of nX7 0..3 arrays with no element equal to another within two positions in the same row or column, and new values 0..3 introduced in row major order
%C Column 7 of A206692
%H R. H. Hardin, <a href="/A206691/b206691.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..2..3..0..1..2....0..1..2..3..1..0..2....0..1..2..3..0..2..3
%e ..1..3..0..1..2..3..0....1..3..0..1..2..3..0....1..2..3..0..1..3..0
%e ..2..0..1..2..3..0..1....2..0..3..2..0..1..3....2..3..1..2..3..0..1
%e ..0..2..3..0..1..2..3....3..2..1..0..3..2..1....3..1..0..3..2..1..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 11 2012
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