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

20, 200, 2826, 26980, 308268, 2964940, 31799477, 308289440, 3225261237, 31480928780, 325138005739, 3188808158080, 32682606118057, 321645620626780, 3280008824707825, 32362636113497810, 328859264823219200

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