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%I #5 Mar 31 2012 12:37:12
%S 14,1155,623933,1719525751,24021101375251,1738678950539792051
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having no more than two equal edges, and new values 0..2 introduced in row major order
%C Diagonal of A206621
%e Some solutions for n=4
%e ..0..0..1..2..2....0..0..0..0..1....0..0..0..1..2....0..0..1..2..2
%e ..2..1..2..1..1....1..2..1..2..0....1..0..2..0..2....2..1..0..0..1
%e ..1..2..1..1..2....1..0..2..1..0....0..1..0..0..1....2..0..1..1..0
%e ..1..1..0..2..1....1..2..0..0..2....2..0..2..2..0....0..2..2..0..1
%e ..2..0..1..2..1....0..0..1..0..1....1..2..1..2..1....0..1..0..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Feb 10 2012