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1/24 the number of (n+1)X9 0..3 arrays with every 2X2 subblock containing exactly three distinct values
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%I #4 Mar 31 2012 12:35:53

%S 36013568,142681644568,552606468835138,2147583158143435461,

%T 8342194020938064158034,32407200636226196823851489

%N 1/24 the number of (n+1)X9 0..3 arrays with every 2X2 subblock containing exactly three distinct values

%C Column 8 of A183594

%e Some solutions with a(1,1)=0 for 3X9

%e ..0..0..0..0..2..3..2..2..0....0..0..0..0..2..3..1..1..3

%e ..2..1..2..1..0..2..1..3..3....2..1..2..1..0..2..3..2..1

%e ..0..0..0..0..2..3..2..1..0....0..0..0..0..2..3..0..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011