%I #5 Apr 12 2015 08:49:21
%S 512,9072,202462,2212280,7212370,20148566,20860406,59078346,184212024,
%T 632179718,2314423502,8727557690,33524570530,130212627960,
%U 509112768360,1998206331062,7859885695566,30956159700748,122020341570654
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally and vertically
%C Diagonal of A256904
%H R. H. Hardin, <a href="/A256896/b256896.txt">Table of n, a(n) for n = 1..31</a>
%e Some solutions for n=2
%e ..0..1..1..0....0..1..0..0....0..1..0..1....1..1..1..1....1..0..1..0
%e ..0..0..0..1....0..1..1..1....0..0..0..1....1..0..0..0....1..0..1..1
%e ..0..0..0..1....0..1..1..1....0..0..0..0....0..0..1..1....1..1..1..1
%e ..0..0..1..1....1..0..0..1....0..1..0..0....1..1..1..1....1..1..0..1
%Y Cf. A256904
%K nonn
%O 1,1
%A _R. H. Hardin_, Apr 12 2015