A221435 Number of nX5 1..(max n,5) arrays with each row and column having unrepeated values.

120, 5280, 66240, 161280, 161280, 812851200, 20449013760000, 921456860096102400, 68695056598964266598400

Offset: 1

Author

R. H. Hardin Jan 16 2013

Keywords

• nonn

Comments

Column 5 of A221438

Examples

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