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%I #4 Dec 18 2013 06:29:36
%S 44,2108,328508,176523392,327319305140,2123808459730080,
%T 48397283414008033460,3890410142021294923041716,
%U 1105116797109942923859722977708,1111125061956511417987148049668526572
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 4
%C Diagonal of A233949
%e Some solutions for n=2
%e ..2..2..2....0..0..0....1..0..0....0..2..2....2..1..0....2..0..1....2..1..0
%e ..2..0..2....2..2..0....0..1..2....0..0..1....1..2..0....2..1..2....1..2..1
%e ..2..0..2....2..0..0....0..2..1....1..2..1....0..1..1....1..0..0....2..1..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 18 2013
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