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%I #5 Mar 31 2012 12:37:09
%S 48,2310,295392,99399924,86276125692,192565971689028,
%T 1102253485190936160,16166591528019333325686,
%U 607114854619773061565096460,58357759658347780979413921776468
%N Number of (n+1)X(n+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one
%C Diagonal of A206054
%e Some solutions for n=4
%e ..1..0..0..1..2....0..1..0..0..2....2..0..2..2..0....0..0..2..0..0
%e ..2..0..1..1..2....1..1..1..2..2....2..0..1..2..2....1..1..2..2..2
%e ..0..0..0..1..1....1..2..1..1..1....2..0..1..2..1....2..1..1..1..1
%e ..0..1..0..1..2....1..2..2..1..0....0..0..1..1..1....0..0..0..0..0
%e ..0..0..0..1..2....1..2..1..1..1....2..0..0..0..0....0..1..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 03 2012
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