%I #5 Jan 17 2015 09:40:37
%S 512,31632,3939840,1052857184,633276761856,896906647300128,
%T 2875255935248467200,21455396352019560697376,
%U 370924232864752698632296192,14893383155687607471120823056160,1383367306744696268677387801027845376
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally
%C Diagonal of A253871
%H R. H. Hardin, <a href="/A253864/b253864.txt">Table of n, a(n) for n = 1..13</a>
%e Some solutions for n=2
%e ..1..1..1..1....1..1..1..1....1..1..1..1....0..0..1..0....0..1..0..0
%e ..1..0..0..1....1..1..0..0....1..0..0..1....1..1..0..0....1..0..1..0
%e ..0..0..1..0....0..0..1..1....0..1..0..0....0..1..1..1....1..0..0..1
%e ..1..0..0..1....0..1..0..0....0..1..0..1....0..0..1..1....1..0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 17 2015