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A223306 Number of nX3 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
9, 36, 324, 1845, 17343, 119660, 1139787, 8607060, 81980208, 654895692, 6214786587, 51174096165, 483028282800, 4058363367764, 38087602931007, 324428475860991, 3027965859096579, 26044772393542375, 242002470580757595 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A223309
LINKS
EXAMPLE
Some solutions for n=3
..0..1..2....0..1..2....0..2..2....0..2..1....1..1..2....0..1..1....0..0..2
..1..2..2....1..1..2....0..1..1....0..0..2....1..1..2....0..2..2....0..1..2
..0..1..2....0..2..2....0..2..2....1..2..2....1..2..2....0..1..1....0..2..2
CROSSREFS
Sequence in context: A024120 A262782 A204513 * A272890 A129425 A246757
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2013
STATUS
approved

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Last modified March 29 07:27 EDT 2024. Contains 371265 sequences. (Running on oeis4.)