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A221753 Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out straight through or left turns 0
1, 64, 736, 16715, 311288, 6168942, 122732982, 2429844368, 48285624377, 958570609399 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A221755

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A231305 A108538 A195593 * A055867 A304346 A316217

Adjacent sequences:  A221750 A221751 A221752 * A221754 A221755 A221756

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2013

STATUS

approved

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Last modified January 26 17:45 EST 2021. Contains 340442 sequences. (Running on oeis4.)