%I
%S 96,5054,231618,12191612,1203787298,190531611192,50643184293432,
%T 19416483125259158,12122837536950012216,11807644473938508493957,
%U 18430004981764028431520387
%N Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements
%C Diagonal of A251167
%e Some solutions for n=2
%e ..0..1..1....1..2..3....1..0..2....1..0..3....0..3..3....0..2..2....0..3..3
%e ..0..0..1....0..0..1....2..0..0....1..0..3....0..0..2....2..0..1....1..0..3
%e ..1..1..0....3..2..1....3..2..0....3..1..0....1..0..0....3..3..2....3..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 30 2014
