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%I #4 Mar 31 2012 12:35:53
%S 64979929,129463663,311907001,870960607,2719942729
%N Number of (n+1)X9 0..6 arrays with every 2x2 subblock summing to 12
%C Column 8 of A183672
%e Some solutions for 3X9
%e ..0..4..0..6..0..6..1..6..2....0..6..0..5..0..5..3..2..0
%e ..3..5..3..3..3..3..2..3..1....4..2..4..3..4..3..1..6..4
%e ..0..4..0..6..0..6..1..6..2....0..6..0..5..0..5..3..2..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 06 2011