A222954 Number of n X n 0..1 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.

2, 2, 16, 16, 512, 512, 323600, 144930, 1808243216, 615667968

Offset: 1

Author

R. H. Hardin, Mar 10 2013

Keywords

• nonn
• more

Examples

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

Crossrefs

Main diagonal of A222959.