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%I #5 Feb 01 2015 10:32:27
%S 512,10870,312322,2148260,10679860,67038844,206491388,1250249820,
%T 5063238114,28541610636,134752005110,745481127674,3775535862318,
%U 20661615040104,108055326376786,586769234129672,3112281471218398
%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the four sums of the central row, central column, diagonal and antidiagonal nondecreasing horizontally and vertically
%C Diagonal of A254568
%H R. H. Hardin, <a href="/A254560/b254560.txt">Table of n, a(n) for n = 1..29</a>
%e Some solutions for n=2
%e ..1..1..0..1....0..0..1..0....1..1..0..1....0..0..0..1....1..0..0..0
%e ..0..0..1..0....1..0..0..0....1..0..1..0....0..0..1..0....1..0..1..0
%e ..1..0..1..1....0..0..0..1....0..0..1..0....1..0..1..0....1..0..1..1
%e ..0..1..1..0....0..1..1..1....1..1..0..1....1..0..0..1....0..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 01 2015
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