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%I #4 Feb 10 2015 08:06:06
%S 512,8944,171400,4577708,42268052,290329276,1890553676,6706657300,
%T 27187563600,107210607174,372692369806,1336057750714
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally and vertically
%C Diagonal of A254894
%e Some solutions for n=3
%e ..0..1..0..0..1....0..1..0..1..1....0..0..0..0..1....0..0..0..0..0
%e ..0..0..0..0..0....0..0..0..0..0....0..0..0..1..1....1..0..0..1..0
%e ..1..1..0..0..1....1..0..0..0..1....1..0..0..1..1....0..0..0..1..0
%e ..0..1..0..1..1....1..0..0..1..1....0..0..1..1..1....0..0..0..1..0
%e ..0..0..0..1..0....0..0..0..1..0....0..0..0..1..1....0..0..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 10 2015