A265238 Number of nX3 arrays containing 3 copies of 0..n-1 with no equal antidiagonal neighbors and new values introduced sequentially from 0.

1, 4, 92, 4716, 414716, 55210372, 10337500044, 2587595524492, 834145695871436, 336495839997451716, 166037668496103782012

Offset: 1

Author

R. H. Hardin, Dec 06 2015

Keywords

• nonn

Comments

Column 3 of A265241.

Examples

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

Crossrefs

Cf. A265241.