A199235 Number of nX6 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to at least one horizontal or vertical neighbor

1, 143, 14159, 2350573, 410003607, 74737706829

Offset

1,2

Comments

Column 6 of A199237

Links

Table of n, a(n) for n=1..6.

Example

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

Crossrefs

Sequence in context: A217534 A279115 A199039 * A029555 A265102 A046179

Adjacent sequences: A199232 A199233 A199234 * A199236 A199237 A199238

Keyword

nonn

Author

R. H. Hardin Nov 04 2011

Status

approved