A275357 Number of 7Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,-2) and new values introduced in order 0..2.

365, 13824, 70272, 982152, 17258544, 306863916, 5814135340, 110244645536, 2098489810224, 40114251782424, 766949039546240, 14666714552507552, 280570769528044520, 5367279019878620308, 102680304956049984556

Offset

1,1

Comments

Row 7 of A275352.

Links

R. H. Hardin, Table of n, a(n) for n = 1..65

Example

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

Crossrefs

Cf. A275352.

Sequence in context: A276253 A233116 A208433 * A275147 A275227 A281610

Adjacent sequences: A275354 A275355 A275356 * A275358 A275359 A275360

Keyword

nonn

Author

R. H. Hardin, Jul 24 2016

Status

approved