A223820 Number of nX3 0..3 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.

16, 16, 256, 484, 12544, 29584, 1132096, 3034564, 136048896, 399040576, 19221049600, 59439415204, 3000766281984, 9636752993344, 502638822873664, 1660231626483600, 88755496992657664, 299596751622662400

Offset: 1

Author

R. H. Hardin Mar 27 2013

Keywords

• nonn

Comments

Column 3 of A223824

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..43