A238909 Number of (n+1) X (4+1) 0..2 arrays with no element equal to all horizontal neighbors or equal to all vertical neighbors, and new values 0..2 introduced in row major order.

261, 4287, 408726, 22778013, 1474369337, 91433307852, 5739848041311, 359075051396597, 22485455035768752, 1407650415969195223, 88129886999002396853, 5517489584652726976452, 345432121911152692673353

Offset

1,1

Comments

Column 4 of A238912.

Links

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

Example

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

Crossrefs

Cf. A238912.

Sequence in context: A063364 A264894 A028536 * A263910 A345568 A345824

Adjacent sequences: A238906 A238907 A238908 * A238910 A238911 A238912

Keyword

nonn

Author

R. H. Hardin, Mar 07 2014

Status

approved