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A221406
Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with every occupancy equal to zero or two
1
0, 120, 0, 47156, 0, 18852560, 0, 7505597654, 0, 2984164922226, 0, 1185951960926210, 0, 471249297474390114, 0, 187247029623260170674, 0, 74400007192624944055794, 0, 29561675588644660921885852, 0
OFFSET
1,2
COMMENTS
Column 5 of A221408
LINKS
EXAMPLE
Some solutions for n=4
..2..0..2..2..2....0..2..0..2..2....2..0..2..2..2....2..0..0..2..2
..0..0..2..0..0....0..2..0..2..0....0..0..0..2..0....0..2..0..0..2
..2..0..0..0..2....0..0..0..2..0....0..2..0..2..0....2..0..2..2..0
..2..0..2..0..2....2..2..2..2..0....2..0..2..2..0....2..0..0..0..2
CROSSREFS
Sequence in context: A073836 A242836 A229031 * A267428 A156739 A326798
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2013
STATUS
approved