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A221488 Number of 6Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction 0
0, 1024, 12494, 21576814, 2942599561, 1224264741193, 290839286759257, 90504836908421055 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A221483

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=3

..0..3..0....1..1..0....0..2..0....1..2..0....0..2..0....0..3..0....0..2..1

..1..1..1....1..2..0....1..3..0....0..1..1....1..3..0....1..0..1....1..2..0

..0..3..1....1..2..0....2..1..0....1..3..1....1..2..2....1..3..1....0..2..0

..1..1..0....1..3..0....0..1..1....0..2..0....0..1..0....0..2..0....2..1..0

..1..2..1....0..3..2....1..3..0....0..2..1....0..3..0....1..2..1....1..2..1

..0..2..0....0..1..0....0..2..1....1..2..0....1..1..1....0..2..0....0..3..0

CROSSREFS

Sequence in context: A198075 A197909 A218526 * A138334 A268124 A205611

Adjacent sequences:  A221485 A221486 A221487 * A221489 A221490 A221491

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2013

STATUS

approved

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Last modified October 20 07:41 EDT 2020. Contains 337897 sequences. (Running on oeis4.)