A208470 Number of 5Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

52, 115975, 1366230232, 51074630353994, 4585512913250157737, 838156242834826375910795

Offset: 1

Author

R. H. Hardin Feb 27 2012

Keywords

• nonn

Comments

Row 5 of A208466

Examples

			Some solutions for n=4
..0..1..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..1..0....0..1..0..0....0..1..0..0....0..1..1..0....0..1..0..0
..0..0..0..0....0..1..0..0....2..0..1..0....0..0..0..0....0..0..1..0
..0..2..0..0....0..1..0..0....0..0..0..0....0..1..0..0....0..0..1..0
..0..0..1..0....0..0..1..0....0..1..0..0....0..1..0..0....0..0..0..0