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%I #4 Nov 30 2014 07:08:20
%S 37,810,19131,667626,39326009,3656310083,543468953142,122617016954321,
%T 44433300409434889,25181325286832387856,22702415402871389597941,
%U 31991916656589876360409366,71117605661273126240891959493
%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements
%C Diagonal of A251113
%e Some solutions for n=3
%e ..1..0..0..2....2..2..0..2....1..1..2..2....0..0..1..2....1..1..0..0
%e ..1..0..0..0....0..2..0..0....0..1..0..0....0..0..0..2....0..1..1..0
%e ..1..0..0..0....0..2..0..0....0..1..1..1....2..2..0..0....0..0..1..1
%e ..2..2..2..2....0..2..1..0....2..0..0..1....0..2..1..1....1..0..0..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 30 2014