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%I #6 Mar 31 2012 12:36:48
%S 512,1194,3362,10918,38478,141192,528390,1998486,7609118,29110180,
%T 111787002,430618204,1663208690,6438719028,24976207182,97056810102,
%U 377757631038,1472369063940,5746130037258,22451082059892,87812623596642
%N Number of (n+2)X(n+2) binary arrays with consecutive windows of three bits considered as a binary number nondecreasing in every row and column
%C Diagonal of A202461
%H R. H. Hardin, <a href="/A202454/b202454.txt">Table of n, a(n) for n = 1..68</a>
%e Some solutions for 6X6
%e ..0..0..0..1..0..0....0..0..0..0..1..1....0..0..0..0..0..0....0..0..0..0..0..1
%e ..0..0..0..1..0..0....0..0..0..1..1..1....0..0..0..0..0..0....0..0..0..1..0..1
%e ..0..0..0..1..1..1....0..0..1..1..1..1....0..0..0..0..0..1....0..0..0..1..0..1
%e ..1..1..1..1..1..1....0..1..1..1..1..1....0..1..1..1..1..1....0..1..1..1..1..1
%e ..0..1..1..1..1..1....1..1..1..1..1..1....0..0..0..1..0..1....1..1..1..1..1..1
%e ..0..0..1..1..1..1....0..0..1..1..1..1....0..0..0..1..1..1....0..1..1..1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Dec 19 2011
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