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%I #5 Mar 31 2012 12:37:12
%S 15,9449,122794254,23138312968770,63074271731085058880
%N Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having no more than three equal edges, and new values 0..3 introduced in row major order
%C Diagonal of A206600
%e Some solutions for n=4
%e ..0..0..1..0..1....0..0..0..1..2....0..1..0..0..0....0..0..0..0..1
%e ..0..2..2..1..0....0..2..3..1..2....0..1..1..2..2....2..1..3..0..0
%e ..3..1..0..1..0....0..1..1..0..2....1..2..1..0..3....1..3..2..2..0
%e ..0..0..1..2..0....2..0..1..3..2....2..3..3..0..0....2..2..1..1..0
%e ..3..3..0..1..0....0..0..2..0..1....2..1..3..2..0....1..1..2..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 09 2012
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