A223744 Number of nX3 0..2 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.

9, 9, 81, 81, 1521, 1849, 38025, 59049, 1461681, 2368521, 64112049, 111450249, 3167100729, 5714604025, 167633743761, 311494585689, 9370449532161, 17792173577929, 545559866271729, 1054096283988801, 32828183598395025

Offset: 1

Author

R. H. Hardin Mar 27 2013

Keywords

• nonn

Comments

Column 3 of A223747

Examples

			Some solutions for n=6
..1..2..1....2..2..2....1..2..1....1..2..1....1..1..1....2..1..2....0..2..0
..0..2..0....2..1..2....1..0..1....1..0..1....1..1..1....0..2..0....2..2..2
..1..1..1....0..0..0....2..0..2....1..1..1....1..2..1....0..0..0....0..2..0
..1..1..1....0..2..0....0..0..0....1..1..1....1..0..1....0..0..0....0..2..0
..0..2..0....2..2..2....0..0..0....1..0..1....1..0..1....0..2..0....2..2..2
..1..2..1....2..1..2....2..2..2....1..2..1....1..2..1....2..1..2....0..2..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..33