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%I #5 Mar 31 2012 12:37:30
%S 8,425,90000,74564193,243825684732,3169393696357783,
%T 164459337509857331548,34166144423888468476743142,
%U 28477846744792360413696508021568,95387294845474121466595388218025045126
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order
%C Diagonal of A209829
%e Some solutions for n=4
%e ..0..0..1..0..2....0..0..1..0..0....0..1..0..0..1....0..1..1..2..0
%e ..2..0..0..0..2....2..0..0..0..0....0..0..0..0..0....1..0..1..2..2
%e ..2..0..1..0..2....2..2..2..2..2....0..2..2..0..1....0..0..1..2..0
%e ..2..0..0..0..2....1..1..2..2..0....0..0..0..0..1....0..1..1..2..2
%e ..0..2..2..2..2....0..1..1..2..0....2..0..0..0..0....0..0..1..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 13 2012
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