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%I #4 Jan 03 2015 09:05:47
%S 81,2722,22418,182493,745281,4292539,14461240,74067255,239552591,
%T 1153148632,3757984096,17291330720,57734458801
%N Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically
%C Diagonal of A253533
%e Some solutions for n=4
%e ..1..0..0..1..0....1..0..1..0..2....2..2..1..2..2....0..0..1..2..2
%e ..2..1..1..1..0....2..1..1..0..0....1..1..0..1..0....1..0..0..1..0
%e ..2..2..2..2..0....1..1..1..2..1....2..2..1..2..2....0..0..0..1..0
%e ..1..1..1..1..0....0..1..0..2..1....0..1..0..0..0....0..1..0..1..0
%e ..0..1..2..2..2....2..2..0..2..0....0..2..1..1..2....1..2..1..2..2
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 03 2015
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