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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 0
99, 53291, 30470039, 17788952657, 10441043545431, 6137910765383119, 3609497709468161601 (list; graph; refs; listen; history; text; internal format)
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

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Last modified August 18 21:45 EDT 2022. Contains 356215 sequences. (Running on oeis4.)