A222858 Number of nX4 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope.

10, 41, 410, 2262, 22620, 156436, 1672630, 12777951, 137893630, 1149894920, 12404839040, 108106327001, 1160341870500, 10427449608028, 111092085640400, 1019673460797990, 10777772811219450, 100433003025931774

Offset: 1

Author

R. H. Hardin Mar 07 2013

Keywords

• nonn

Comments

Column 4 of A222862

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..19