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A221424
Number of 6Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two
0
0, 64, 2250, 107695, 3813004, 156275181, 6079373768, 237226735061
OFFSET
1,2
COMMENTS
Row 6 of A221419
EXAMPLE
Some solutions for n=3
..0..2..2....2..0..0....2..0..2....2..0..2....2..2..0....0..2..0....2..2..0
..0..0..2....2..2..0....0..2..0....0..2..2....0..0..2....2..2..0....0..0..2
..2..0..0....2..0..0....2..2..0....0..0..2....2..0..0....0..2..2....0..2..2
..0..2..0....0..2..2....0..2..0....0..2..0....0..2..2....0..2..0....0..0..0
..2..2..0....2..2..0....0..2..0....2..0..0....0..2..0....0..2..0....2..2..0
..2..2..0....0..2..0....2..0..2....0..2..2....2..2..0....2..2..0....0..2..2
CROSSREFS
Sequence in context: A008790 A183432 A017211 * A181241 A053107 A330820
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 15 2013
STATUS
approved