A208464 Number of nX5 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, 113458, 1358524513, 50996571454200, 4585512913250157737, 838683310903953794594668, 279322601688949336349340289673, 156351438264428644652281607036854772

Offset: 1

Author

R. H. Hardin Feb 27 2012

Keywords

• nonn

Comments

Column 5 of A208466

Examples

			Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..0..1..0..0....0..0..0..0..0
..0..1..0..1..0....0..1..0..1..0....0..0..0..1..0....1..2..0..1..2
..0..0..0..0..0....0..0..0..0..1....0..1..0..2..2....1..0..0..2..0
..0..1..0..1..0....0..1..0..0..0....3..4..0..0..0....0..1..3..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23