A222952 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A222952

Number of nX4 0..3 arrays with no adjacent rows or columns having the same least squares slope fit to a straight line, with a single point array taken as having zero slope

0, 36302, 8579208, 3084748094, 690124074740, 194406198823968, 44586928533264392

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 4 of A222953

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A204874 A234858 A234856 * A204967 A011771 A011770

Adjacent sequences: A222949 A222950 A222951 * A222953 A222954 A222955

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 10 2013

STATUS

approved