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

Author

R. H. Hardin Mar 07 2013

Keywords

• nonn
• tabl

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

Examples

			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
		

Links

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