%I #4 Nov 29 2014 18:12:48

%S 50,2740,320950,71431719,26192388204,14586457826568,11583623256480548,

%T 12514359896491286169,17723892558531981314400

%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01

%C Diagonal of A251065

%e Some solutions for n=2

%e ..1..0..2....0..0..2....1..0..0....0..1..2....0..1..2....0..0..2....1..1..1

%e ..0..1..2....0..1..1....0..1..2....0..2..2....1..1..1....0..2..2....0..0..2

%e ..0..1..1....1..2..2....0..0..2....1..0..2....0..2..2....1..0..2....1..1..1

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 29 2014