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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
0, 36302, 8579208, 3084748094, 690124074740, 194406198823968, 44586928533264392
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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
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Last modified September 16 14:29 EDT 2024. Contains 375976 sequences. (Running on oeis4.)