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A221164 Number of nX4 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor 0
21, 3721, 609961, 98570764, 15891102336, 2560795894232, 412629557874937, 66487213493398322, 10713074573795484751, 1726194193763563798039, 278141019078046262629610, 44816753384266736751510164 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A221165
LINKS
EXAMPLE
Some solutions for n=3
..0..2..2..0....0..2..0..1....0..1..4..0....0..2..0..2....0..3..0..3
..0..3..1..0....0..4..1..2....0..2..0..1....0..0..2..1....0..2..2..0
..1..1..2..0....2..0..0..0....2..0..2..0....4..1..0..0....1..0..0..1
CROSSREFS
Sequence in context: A202980 A221722 A153833 * A264250 A250064 A200998
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 03 2013
STATUS
approved

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Last modified May 26 09:40 EDT 2024. Contains 372824 sequences. (Running on oeis4.)