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

1,1

Comments

Row 6 of A275565.

Links

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

Example

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

Crossrefs

Cf. A275565.

Sequence in context: A072529 A349115 A159681 * A071639 A061530 A275637

Adjacent sequences: A275566 A275567 A275568 * A275570 A275571 A275572

Keyword

nonn

Author

R. H. Hardin, Aug 01 2016

Status

approved