A213994 Number of 5X5 0..n matrices whose square is also a 0..n matrix.

474286, 35799856, 421195466, 5018010431, 22406574462, 124477495732, 361204218672, 1222761036532, 3390266359632

Offset: 1

Author

R. H. Hardin Jun 30 2012

Keywords

• nonn

Comments

Row 5 of A213990

Examples

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