A221434 Number of n X 4 1..(max n,4) arrays with each row and column having unrepeated values.

24, 216, 576, 576, 161280, 283046400, 782137036800, 3563924952268800, 25315180943034286080, 269169718618593283276800, 4137679434467601752260608000, 89264433387042486497787641856000, 2634485866147603716480364478201856000, 104038940808800435615474810743389211852800

Offset: 1

Author

R. H. Hardin, Jan 16 2013

Keywords

• nonn

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15

Crossrefs

Column 4 of A221438.