A222847 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every row and column least squares fitting to a positive slope straight line

1, 3, 3, 16, 27, 16, 48, 576, 576, 48, 185, 4896, 67986, 4896, 185, 534, 63455, 2088576, 2088576, 63455, 534, 1873, 531864, 121707070, 176032212, 121707070, 531864, 1873, 5397, 5916807, 3904508304, 32109350238, 32109350238, 3904508304, 5916807, 5397

Offset

1,2

Comments

Table starts

....1.......3.........16..........48.........185...........534.........1873

....3......27........576........4896.......63455........531864......5916807

...16.....576......67986.....2088576...121707070....3904508304.179900642006

...48....4896....2088576...176032212.32109350238.2840442492432

..185...63455..121707070.32109350238

..534..531864.3904508304

.1873.5916807

.5397

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

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

Crossrefs

Sequence in context: A258017 A209055 A209212 * A278309 A048234 A068415

Adjacent sequences: A222844 A222845 A222846 * A222848 A222849 A222850

Keyword

nonn,tabl

Author

R. H. Hardin Mar 07 2013

Status

approved