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A221333 Number of 6Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2 0
1, 19601, 9637322, 7010554450, 4205264399891, 2568131772343102, 1529318909534974055, 908027872393164105009 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A221328

LINKS

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

EXAMPLE

Some solutions for n=3

..0..1..0....0..1..0....0..1..0....0..1..0....0..1..0....0..1..0....0..1..0

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

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

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

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

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

CROSSREFS

Sequence in context: A339534 A319062 A344829 * A069369 A156721 A174760

Adjacent sequences:  A221330 A221331 A221332 * A221334 A221335 A221336

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 11 2013

STATUS

approved

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Last modified June 13 06:38 EDT 2021. Contains 344981 sequences. (Running on oeis4.)