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A223753 Number of 2X(n+1) 0..3 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
20, 200, 2826, 26980, 308268, 2964940, 31799477, 308289440, 3225261237, 31480928780, 325138005739, 3188808158080, 32682606118057, 321645620626780, 3280008824707825, 32362636113497810, 328859264823219200 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 2 of A223751

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=3

..1..0..2..1....0..1..2..2....1..1..1..2....0..2..2..3....0..2..0..1

..2..0..3..3....0..1..2..3....1..2..2..2....1..3..2..3....0..3..1..2

CROSSREFS

Sequence in context: A103261 A120796 A120787 * A099197 A041766 A121088

Adjacent sequences:  A223750 A223751 A223752 * A223754 A223755 A223756

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved

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Last modified May 27 04:33 EDT 2020. Contains 334649 sequences. (Running on oeis4.)