A199244 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 zero or two horizontal or vertical neighbors

5, 39, 472, 7100, 106134, 1682457, 27337776, 454364514, 7678775057, 131559174015, 2279099028427

Offset

1,1

Comments

Column 6 of A199246

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Sequence in context: A122486 A187739 A067083 * A322884 A352658 A221412

Adjacent sequences: A199241 A199242 A199243 * A199245 A199246 A199247

Keyword

nonn

Author

R. H. Hardin Nov 04 2011

Status

approved