A275400 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,0) or (-1,1) and new values introduced in order 0..2.

365, 69984, 65344, 186538, 566331, 4142271, 30551417, 232200615, 1766745035, 13518543301, 103511190946, 793366592691, 6084436180732, 46693188566604, 358610775107181, 2756060353163818, 21192914770286797, 163023210361243535

Offset

1,1

Comments

Column 7 of A275401.

Links

R. H. Hardin, Table of n, a(n) for n = 1..195

Example

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

Crossrefs

Cf. A275401.

Sequence in context: A281610 A233072 A275503 * A275265 A233097 A223386

Adjacent sequences: A275397 A275398 A275399 * A275401 A275402 A275403

Keyword

nonn

Author

R. H. Hardin, Jul 26 2016

Status

approved