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%I #4 Jan 13 2014 10:49:22
%S 16,380,28584,6894210,5376199876,13578805464958,111141360154581108,
%T 2948319928633417670416,253497281472306754538416318,
%U 70644048705639953560633398930712
%N Number of (n+1)X(n+1) 0..1 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise
%C Diagonal of A235679
%e Some solutions for n=3
%e ..1..1..0..1....1..0..0..1....0..0..1..0....0..0..0..1....0..1..1..0
%e ..0..0..0..0....0..0..1..1....1..0..1..0....1..0..1..0....0..0..1..0
%e ..1..0..1..0....1..0..1..0....1..0..0..0....1..1..0..1....0..1..0..1
%e ..1..0..0..0....0..1..0..0....1..1..1..0....0..0..1..0....0..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 13 2014
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