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A223074 T(n,k)=Number of nXk 0..2 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 3
3, 0, 0, 0, 62, 0, 0, 306, 306, 0, 0, 2888, 7074, 2888, 0, 0, 17968, 207216, 207216, 17968, 0, 0, 139616, 4047876, 27452008, 4047876, 139616, 0, 0, 928600, 97159620, 1828765016, 1828765016, 97159620, 928600, 0, 0, 6820956, 1928081520 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.3.......0..........0............0............0............0..............0
.0......62........306.........2888........17968.......139616.........928600
.0.....306.......7074.......207216......4047876.....97159620.....1928081520
.0....2888.....207216.....27452008...1828765016.170196118056.11838030123808
.0...17968....4047876...1828765016.346224860946
.0..139616...97159620.170196118056
.0..928600.1928081520
.0.6820956
LINKS
EXAMPLE
Some solutions for n=3 k=4
..1..1..0..1....0..0..2..0....0..0..0..0....2..1..0..0....1..0..2..2
..2..2..0..1....1..0..1..2....0..2..1..1....0..1..2..2....2..1..1..2
..2..0..1..1....0..1..1..1....1..2..0..1....2..2..0..2....2..0..0..1
CROSSREFS
Sequence in context: A222896 A057387 A109898 * A192732 A092573 A307801
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 14 2013
STATUS
approved

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Last modified March 19 04:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)