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A223152 Number of nX4 0..1 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, 66, 788, 28690, 327840, 6576382, 79156940, 1344714010, 16864279960, 266464713662, 3423259270244, 52061640328402, 679038371903176 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A223154
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..1....1..1..1..0....1..1..1..0....0..0..1..0....1..1..1..0
..1..0..0..1....1..0..0..1....1..0..1..1....0..1..1..1....0..0..0..0
..1..0..1..1....1..0..1..1....0..1..0..0....1..0..0..0....0..1..0..1
CROSSREFS
Sequence in context: A270258 A223410 A258917 * A301544 A229328 A101093
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 16 2013
STATUS
approved

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Last modified May 29 14:43 EDT 2024. Contains 372952 sequences. (Running on oeis4.)