A276252 Number of 6Xn 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.

122, 2304, 5671, 36744, 291113, 2069454, 17450554, 141165944, 1075068633, 8722058423, 70283762776, 549061777779, 4393994452605, 35216257735083, 278169606460673, 2216529301439897, 17704473017525506, 140499576312114974

Offset

1,1

Comments

Row 6 of A276248.

Links

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

Example

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

Crossrefs

Cf. A276248.

Sequence in context: A249532 A222991 A208049 * A259528 A192870 A208432

Adjacent sequences: A276249 A276250 A276251 * A276253 A276254 A276255

Keyword

nonn

Author

R. H. Hardin, Aug 25 2016

Status

approved