%I #5 Dec 01 2014 07:08:17
%S 75,14265,20904689,236035946835,20534495636679387,
%T 13764744150100667222985,71093648993125363900542904561,
%U 2829255370682961509218005180234886323
%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the minimum of its antidiagonal elements
%C Diagonal of A251249
%H R. H. Hardin, <a href="/A251242/b251242.txt">Table of n, a(n) for n = 1..11</a>
%e Some solutions for n=2
%e ..2..0..0....0..2..1....2..0..2....1..2..0....2..0..1....2..2..0....1..1..0
%e ..1..2..0....0..0..1....1..1..2....1..2..0....2..1..2....1..2..1....2..2..1
%e ..2..1..0....0..0..2....0..0..0....1..1..1....1..1..0....1..1..2....1..0..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 01 2014
