A202716 Number of 4X4 0..n arrays with row sums equal and no column sum equal to the previous.

838, 173860, 7788648, 147823100, 1631287078, 12388736288, 71598143176, 335967493328, 1337851154982, 4665608624084, 14584276374720

Offset: 1

Author

R. H. Hardin Dec 23 2011

Keywords

• nonn

Comments

Row 4 of A202714

Examples

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