%I #4 Mar 22 2013 20:07:37
%S 8,10,32,44,192,296,1744,2838,18736,32016,221344,388830,2758976,
%T 4941116,35662528,64786608,473507728,869683644,6418667904,11892172228,
%U 88460803136,165061529924,1235762441328,2319452057140,17458917553440
%N Number of nX3 0..1 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope
%C Column 3 of A223592
%H R. H. Hardin, <a href="/A223587/b223587.txt">Table of n, a(n) for n = 1..73</a>
%e Some solutions for n=3
%e ..0..0..0....0..1..0....1..0..1....1..0..0....0..0..0....1..1..1....1..1..1
%e ..1..0..1....0..0..0....1..0..1....1..0..0....0..1..0....1..1..1....1..1..1
%e ..1..1..1....0..1..0....1..0..1....1..0..0....0..0..0....0..0..0....1..1..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 22 2013