A223160 Number of nX1 0..3 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope

4, 10, 40, 139, 568, 2134, 8724, 33639, 136904, 534276, 2166472, 8510509, 34420568, 135769884, 548080716, 2167856618, 8738893896, 34633415528, 139459394648, 553500106331, 2226881681120, 8848085247670, 35573691960864, 141468339347027

Offset

1,1

Comments

Column 1 of A223165

Links

R. H. Hardin, Table of n, a(n) for n = 1..195

Example

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

Crossrefs

Sequence in context: A149210 A149211 A149212 * A263551 A007173 A222367

Adjacent sequences: A223157 A223158 A223159 * A223161 A223162 A223163

Keyword

nonn

Author

R. H. Hardin Mar 16 2013

Status

approved