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%I #5 Mar 31 2012 12:37:14
%S 61,3721,180294,8685113,419203246,20232472915,976568167285,
%T 47136598368813,2275148053210870,109814791045365561,
%U 5300435987967164186,255836290323951112260,12348453565068178201467,596022946181664047184360
%N Number of 3Xn 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal
%C Row 3 of A206974
%H R. H. Hardin, <a href="/A206975/b206975.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..2..2..0....2..0..1..1....0..3..1..1....0..3..3..3....0..0..2..2
%e ..3..0..1..1....2..0..0..2....1..2..2..0....1..3..1..2....0..1..0..1
%e ..2..2..1..1....1..3..1..3....0..2..1..2....1..0..1..1....3..1..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 14 2012
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