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A221487 Number of 5Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction 0
0, 256, 1980, 865318, 48514602, 6681667775, 579209730382, 63151886490539, 6122578678693488, 629811753399775239 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 5 of A221483

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A205363 A237340 A237333 * A014711 A236451 A236445

Adjacent sequences:  A221484 A221485 A221486 * A221488 A221489 A221490

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2013

STATUS

approved

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Last modified October 20 10:00 EDT 2020. Contains 337900 sequences. (Running on oeis4.)