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%I #7 Mar 31 2012 12:35:53
%S 44,340,2300,14644,90524,551380,3333500,20077684
%N Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock summing to 6
%C Diagonal of A183642
%e Some solutions for 3X3
%e ..1..1..0....0..2..0....2..2..2....3..1..0....1..1..1....2..0..2....1..3..1
%e ..1..3..2....1..3..1....1..1..1....0..2..3....2..2..2....3..1..3....0..2..0
%e ..1..1..0....2..0..2....3..1..3....3..1..0....2..0..2....0..2..0....1..3..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 06 2011
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