A268205 Number of 1Xn 0..n arrays with every repeated value in every row and column greater than the previous repeated value.

2, 9, 60, 570, 6960, 104006, 1837752, 37478718, 866361210, 22384298772, 639235846656, 19993319047663, 679693673292816, 24954856965472485, 984056034148827632, 41479800266522142954, 1861205533117885580022

Offset: 1

Author

R. H. Hardin, Jan 28 2016

Keywords

• nonn

Comments

Row 1 of A268204.

Examples

			Some solutions for n=6
..4..1..5..1..3..3....4..2..6..4..4..0....5..0..0..6..5..0....3..1..2..6..1..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..193

Crossrefs

Cf. A268204.