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%I #5 Mar 31 2012 12:37:32
%S 1,2316,7363642,178967377396,35812805301833530,
%T 59168572185919156908468,807064033391082670768444038930,
%U 90885346773699848616006199051130800984
%N Number of (n+1)X(n+1) 0..3 arrays containing all values 0..3 with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order
%C Diagonal of A210183
%e Some solutions for n=4
%e ..0..0..0..0..0....0..0..1..0..2....0..1..0..0..0....0..0..1..0..2
%e ..1..2..1..2..3....1..2..2..1..1....0..2..1..3..2....1..2..2..0..1
%e ..2..3..3..2..0....0..3..0..0..2....3..1..3..2..0....1..3..1..3..2
%e ..0..0..1..2..3....2..1..1..2..3....1..0..0..0..1....2..3..2..3..0
%e ..2..3..0..2..1....1..0..2..0..2....3..1..2..3..0....0..0..3..1..3
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 18 2012
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