%I #12 Dec 04 2021 08:34:35
%S 1,6,96,576,5180,28836,222887,1241310,8712264,48837168,328280478,
%T 1854039060,12126536066,69047705664,443482507552,2544063717888,
%U 16136462307440,93109093464048,585311170019020,3393940344415872
%N Number of 3 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.
%H R. H. Hardin, <a href="/A222971/b222971.txt">Table of n, a(n) for n = 1..24</a>
%e Some solutions for n=3:
%e 0 1 0 1 0 0 0 1 0 1 1 1 0 0 0 1 0 0 1 1
%e 0 1 1 1 0 1 1 1 0 0 0 1 0 0 1 1 0 1 1 1
%e 0 1 0 1 0 0 0 1 0 1 1 1 0 1 0 1 0 1 1 1
%Y Row 3 of A222969.
%K nonn
%O 1,2
%A _R. H. Hardin_, Mar 10 2013