A275569 Number of 6Xn 0..2 arrays with no element equal to any value at offset (-2,0) (-1,2) or (0,-2) and new values introduced in order 0..2.

24, 3456, 7200, 15000, 57600, 221184, 867456, 3402054, 13630806, 54613734, 221152134, 895530534, 3642889494, 14818750854, 60456102318, 246642942006, 1008264289032, 4121735121504, 16864876108080, 69005901096600

Offset: 1

Author

R. H. Hardin, Aug 01 2016

Keywords

• nonn

Comments

Row 6 of A275565.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A275565.