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%I #5 Aug 11 2014 22:46:10
%S 121,804,6828,43456,284992,1473792,7616082,32986844,142361644,
%T 537301496,2020791427,6843417893,23099713493,71683038307,221767602558,
%U 640525984280,1844757869502,5018918602972,13619020527533,35234899933725
%N Number of (n+1)X(3+1) 0..1 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise
%C Column 3 of A238255
%H R. H. Hardin, <a href="/A238250/b238250.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A238250/a238250.txt">Empirical recurrence of order 81</a>
%F Empirical recurrence of order 81 (see link above)
%e Some solutions for n=4
%e ..0..0..0..1....0..1..1..1....0..0..0..1....0..0..0..1....0..0..0..0
%e ..0..0..0..0....0..0..1..1....1..0..1..0....0..0..0..0....0..0..0..0
%e ..0..1..0..0....1..1..0..0....0..0..0..1....0..0..0..1....1..0..1..0
%e ..0..1..1..1....0..1..1..1....1..1..1..0....1..0..1..0....1..1..1..1
%e ..1..1..1..1....1..1..0..1....1..1..1..0....1..0..1..1....1..0..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_, Feb 21 2014
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