A221301 Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2

99, 53291, 30470039, 17788952657, 10441043545431, 6137910765383119, 3609497709468161601

Offset

1,1

Comments

Column 6 of A221303

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for n=3
..0..1..2..0..2..0....0..1..2..0..2..1....0..1..2..0..2..1....0..1..1..2..1..0
..0..1..1..2..1..2....0..1..1..2..0..2....0..2..1..2..1..2....0..1..0..2..0..2
..0..2..2..0..0..2....0..2..2..1..1..0....0..1..2..0..0..1....0..2..2..2..2..0

Crossrefs

Sequence in context: A233227 A132607 A221326 * A233144 A233236 A233110

Adjacent sequences: A221298 A221299 A221300 * A221302 A221303 A221304

Keyword

nonn

Author

R. H. Hardin Jan 09 2013

Status

approved