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A221607 Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without move-in move-out left turns 0
16, 1378, 160999, 18561474, 2114436826, 240257613761, 27294219603383, 3100806305382481 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A221609

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A134375 A321583 A057994 * A330335 A160251 A106176

Adjacent sequences:  A221604 A221605 A221606 * A221608 A221609 A221610

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 20 2013

STATUS

approved

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Last modified April 18 10:21 EDT 2021. Contains 343087 sequences. (Running on oeis4.)