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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 1
4, 10, 40, 139, 568, 2134, 8724, 33639, 136904, 534276, 2166472, 8510509, 34420568, 135769884, 548080716, 2167856618, 8738893896, 34633415528, 139459394648, 553500106331, 2226881681120, 8848085247670, 35573691960864, 141468339347027 (list; graph; refs; listen; history; text; internal format)
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

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Last modified January 19 06:37 EST 2020. Contains 331033 sequences. (Running on oeis4.)