A223310 - OEIS

A223310

Number of 1X(n+1) 0..2 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

%I #4 Mar 19 2013 09:56:20

%S 3,9,36,102,343,996,3159,9237,28755,84570,260442,769023,2353687,

%T 6969738,21244302,63039522,191601206,569452122,1727158776,5139583854,

%U 15563717515,46359362664,140211940350,417981796023,1262920615919,3767350662711

%N Number of 1X(n+1) 0..2 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

%C Row 1 of A223309

%H R. H. Hardin, <a href="/A223310/b223310.txt">Table of n, a(n) for n = 1..184</a>

%e Some solutions for n=3

%e ..1..0..0..2....0..1..2..1....1..2..1..2....1..0..1..1....0..1..0..1

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 19 2013