A223819 Number of nX1 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.

4, 4, 16, 22, 112, 172, 1064, 1742, 11664, 19976, 138640, 243802, 1732272, 3104312, 22419608, 40745940, 297918608, 547354320, 4040882352, 7488584886, 55716851136, 103984450924, 778639744064, 1461701983398, 11004152490272, 20759785009832

Offset: 1

Author

R. H. Hardin Mar 27 2013

Keywords

• nonn

Comments

Column 1 of A223824

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..199