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, 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

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

R. H. Hardin, Table of n, a(n) for n = 1..49

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

Adjacent sequences: A223071 A223072 A223073 * A223075 A223076 A223077

Keyword

nonn,tabl

Author

R. H. Hardin Mar 14 2013

Status

approved