%I #5 Apr 13 2015 20:42:42
%S 512,13349,319819,2782301,11818550,27007866,56306098,109071370,
%T 212009150,385935286,699340102,1275550414,2347054062,4286793366,
%U 7769996982,14567381806,27588495230,52263269822,98037946714,189435993774
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally and vertically
%C Diagonal of A256954
%H R. H. Hardin, <a href="/A256947/b256947.txt">Table of n, a(n) for n = 1..31</a>
%e Some solutions for n=2
%e ..0..1..1..1....1..0..1..0....0..0..0..0....0..0..1..1....0..0..1..0
%e ..0..1..1..0....1..1..0..0....1..1..0..1....0..0..1..1....0..0..0..0
%e ..1..1..1..0....1..0..1..0....1..0..1..0....0..1..1..1....0..1..1..1
%e ..1..0..0..0....1..0..1..0....1..0..1..0....1..0..0..0....1..0..1..1
%Y Cf. A256954
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 13 2015
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