A208465 Number of nX6 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.

203, 4132120, 671329819215, 440379403449903222, 838156242834826375910795, 3787532222733253394267947322830, 35487456577214016192433880229514302813, 625053889686420860521751650397504301747811997

Offset: 1

Author

R. H. Hardin Feb 27 2012

Keywords

• nonn

Comments

Column 6 of A208466

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..11