A199039 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 one or two horizontal or vertical neighbors

1, 143, 8090, 674064, 59029339, 5590093696

Offset

1,2

Comments

Column 6 of A199041

Links

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

Example

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

Crossrefs

Sequence in context: A135946 A217534 A279115 * A199235 A029555 A265102

Adjacent sequences: A199036 A199037 A199038 * A199040 A199041 A199042

Keyword

nonn

Author

R. H. Hardin Nov 02 2011

Status

approved