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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 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 1 of A223309
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2013
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)