A223165 T(n,k)=Number of nXk 0..3 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope

4, 10, 10, 40, 50, 40, 139, 500, 500, 139, 568, 3886, 20000, 3886, 568, 2134, 40380, 540154, 540154, 40380, 2134, 8724, 359428, 22935840, 43640576, 22935840, 359428, 8724, 33639, 3723640, 767019352, 6578580741, 6578580741, 767019352, 3723640

Offset

1,1

Comments

Table starts

.......4.........10.............40...............139.................568

......10.........50............500..............3886...............40380

......40........500..........20000............540154............22935840

.....139.......3886.........540154..........43640576..........6578580741

.....568......40380.......22935840........6578580741.......4148524583552

....2134.....359428......767019352......713054874385....1726991116346936

....8724....3723640....32485035360...107232700247240.1085230897885735392

...33639...34904103..1174139120817.12938444501010386

..136904..359369380.49199105599520

..534276.3443215781

.2166472

Links

R. H. Hardin, Table of n, a(n) for n = 1..71

Example

Some solutions for n=3 k=4
..0..0..0..1....0..0..0..2....0..0..0..2....0..0..0..1....0..0..0..2
..0..0..0..1....0..0..1..0....0..0..2..1....2..2..3..3....0..1..2..1
..2..0..2..2....0..0..2..2....0..3..1..2....0..0..2..3....1..3..3..3

Crossrefs

Sequence in context: A201216 A184277 A264163 * A263558 A343092 A346751

Adjacent sequences: A223162 A223163 A223164 * A223166 A223167 A223168

Keyword

nonn,tabl

Author

R. H. Hardin Mar 16 2013

Status

approved