A239533 Number of (n+1)X(4+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order

16, 16, 1536, 11108, 293741, 3785280, 71388971, 1093269814, 18727824939, 301846514891, 5028043624263, 82269916141918, 1359237851307197, 22338985313123955, 368190066381319758, 6059086220408776630

Offset

1,1

Comments

Column 4 of A239537

Links

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

Example

Some solutions for n=5
..0..1..0..2..0....0..1..0..1..2....0..1..0..0..2....0..1..0..1..2
..0..1..0..2..0....0..1..0..1..2....0..1..0..0..2....0..1..0..1..2
..0..1..0..1..0....1..2..0..1..2....0..2..1..1..2....1..2..0..1..2
..0..2..1..1..0....1..2..0..1..0....0..2..1..1..2....1..2..0..1..2
..1..2..1..1..0....1..0..1..2..0....2..0..2..2..1....0..1..0..1..0
..1..2..1..1..0....1..0..1..2..0....2..0..2..2..1....0..1..0..1..0

Crossrefs

Sequence in context: A217980 A324023 A221278 * A070575 A004505 A262460

Adjacent sequences: A239530 A239531 A239532 * A239534 A239535 A239536

Keyword

nonn

Author

R. H. Hardin, Mar 21 2014

Status

approved