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%I #4 Apr 18 2015 08:20:40
%S 2423,7800,20815,67606,191070,443711,992467,2153497,4441745,8865989,
%T 17513940,33716004,63122416,116916487,215061906,390592396,702133715,
%U 1252287829,2218180477,3907760319,6851939815,11959426756,20788960871
%N Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally and vertically
%C Column 2 of A257209
%H R. H. Hardin, <a href="/A257203/b257203.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..1..0..0..1....0..1..0..0....0..1..0..0....1..1..0..1....0..0..0..0
%e ..0..0..0..0....0..1..0..0....0..0..0..1....0..1..0..0....0..1..0..0
%e ..1..0..0..1....0..1..0..0....0..0..0..1....0..1..0..0....0..1..0..1
%e ..1..1..1..1....1..1..0..0....1..1..0..0....1..1..1..1....1..1..0..1
%e ..0..0..0..0....0..0..0..1....0..0..0..1....1..0..1..1....0..0..0..1
%e ..0..1..1..0....0..1..1..1....1..0..0..1....1..1..1..1....1..0..1..1
%Y Cf. A257209
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 18 2015
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