A199260 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 exactly one horizontal or vertical neighbor

1, 36, 114, 1240, 5381, 54588, 278570, 2397792, 14900001, 116469925, 780649269, 6006347346, 41989064859, 319129583349, 2307295438172, 17428815517107, 128586800958736, 972215152349757, 7260589438120238, 55045255657803475

Offset

1,2

Comments

Column 6 of A199261

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A162940 A250426 A176685 * A033575 A044287 A044668

Adjacent sequences: A199257 A199258 A199259 * A199261 A199262 A199263

Keyword

nonn

Author

R. H. Hardin Nov 04 2011

Status

approved