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%I #4 Dec 15 2013 06:13:15
%S 40,756,29816,2723072,578163016,297173770244,365411698279744,
%T 1098248392267801764,7928574480658025834472,
%U 139889299008340046298542520
%N Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal
%C Diagonal of A233733
%e Some solutions for n=3
%e ..1..3..2..3....3..1..3..2....0..1..3..1....0..1..3..2....2..0..2..0
%e ..0..1..0..1....2..0..1..3....2..0..2..0....2..0..2..0....3..2..3..2
%e ..3..2..3..2....3..1..3..2....3..1..3..1....3..1..3..1....2..0..2..0
%e ..0..1..0..1....1..0..1..0....1..0..2..3....1..0..2..0....0..1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 15 2013