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A221832
Number of 5 X n arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns.
0
0, 292, 41618, 4755445, 570066685, 68573607669, 8233561918895, 988927665068644, 118765199887208210
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 5 of A221828.
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
Some solutions for n=3
..1..1..1....1..1..1....1..2..1....0..1..1....0..2..0....0..1..1....1..1..0
..1..0..1....0..2..2....0..1..0....0..1..2....2..2..1....0..1..2....1..3..0
..1..2..1....1..1..1....1..2..0....1..1..1....1..0..0....0..2..2....0..1..0
..2..1..1....0..3..1....1..2..2....2..0..2....0..3..2....1..1..2....0..3..1
..0..2..0....0..1..0....0..2..0....1..1..1....0..2..0....0..1..1....1..3..0
CROSSREFS
Cf. A221828.
Sequence in context: A249239 A221359 A248454 * A238321 A231662 A098249
Adjacent sequences: A221829 A221830 A221831 * A221833 A221834 A221835
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2013
STATUS
approved

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Last modified November 7 04:35 EST 2024. Contains 377523 sequences.
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