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

3, 9, 36, 102, 343, 996, 3159, 9237, 28755, 84570, 260442, 769023, 2353687, 6969738, 21244302, 63039522, 191601206, 569452122, 1727158776, 5139583854, 15563717515, 46359362664, 140211940350, 417981796023, 1262920615919, 3767350662711

Offset

1,1

Comments

Row 1 of A223309

Links

R. H. Hardin, Table of n, a(n) for n = 1..184

Example

Some solutions for n=3
..1..0..0..2....0..1..2..1....1..2..1..2....1..0..1..1....0..1..0..1

Crossrefs

Sequence in context: A354239 A002575 A125792 * A149020 A187980 A057390

Adjacent sequences: A223307 A223308 A223309 * A223311 A223312 A223313

Keyword

nonn

Author

R. H. Hardin Mar 19 2013

Status

approved