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%I #6 Mar 31 2012 12:37:09
%S 81,1980,27060,419088,9653376,338009472,19410499584,1690931386368,
%T 230418338273280,52219993101631488,18073632573916545024,
%U 9818099537300641382400,8885510832166696098201600
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly two clockwise edge increases
%C Diagonal of A205986
%H R. H. Hardin, <a href="/A205978/b205978.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=4
%e ..0..0..1..0..2....0..1..2..0..2....2..0..1..2..2....0..1..1..0..1
%e ..1..1..2..0..0....0..2..2..0..0....0..0..1..1..0....1..1..2..1..1
%e ..2..1..1..2..0....2..2..1..2..2....1..1..2..1..1....1..2..1..1..2
%e ..0..2..1..1..0....2..0..2..2..0....2..1..1..0..1....2..1..1..2..0
%e ..0..0..2..1..0....2..1..2..0..2....0..2..1..1..2....2..1..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 02 2012
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