A268106 Number of 3Xn 0..n arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

8, 729, 262144, 232608375, 427979206656, 1422917069386176, 7780188517552009728, 65282814314072669856303, 797471492064362985335311000, 13607369559752757079941998010377

Offset: 1

Author

R. H. Hardin, Jan 26 2016

Keywords

• nonn

Comments

Row 3 of A268103.

Examples

			Some solutions for n=5
..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0
..0..0..4..1..5....0..0..5..0..5....0..0..5..1..3....0..0..3..2..1
..0..3..2..5..4....0..3..4..0..0....3..3..5..1..2....0..3..4..3..0
		

Crossrefs

Cf. A268103.