A214010 Number of n X n nonnegative integer matrices with row and column i=1..n having sum <= i*6.

7, 1372, 9976732, 2747459653062, 29476753771054668510

Offset: 1

Author

R. H. Hardin Jun 30 2012

Keywords

• nonn

Comments

Column 6 of A214011

Examples

			Some solutions for n=3
..0..4..0....0..3..0....0..0..0....0..3..0....0..1..0....0..1..4....3..0..0
..0..0..0....3..3..0....2..3..4....0..0..7....2..0..0....6..0..0....0..9..0
..4..0..0....0..5..4....0..1..0....0..0.10....0..1..1....0..5..5....0..0..5