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A221354
Number of 4 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.
0
0, 38, 6893, 938070, 103485930, 11446121074, 1234879060395, 133129213688286
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 4 of A221351.
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
Some solutions for n=3
..0..1..0....0..3..0....1..2..0....0..0..0....0..3..1....1..1..0....1..2..1
..1..2..1....0..0..1....1..2..0....2..4..0....0..2..1....1..1..0....0..4..1
..1..2..0....0..4..2....1..1..0....1..1..0....0..2..1....1..4..1....0..2..0
..1..3..0....1..1..0....1..3..0....1..3..0....1..1..0....0..2..0....0..0..1
CROSSREFS
Cf. A221351.
Sequence in context: A282962 A229523 A173133 * A096558 A355589 A145120
Adjacent sequences: A221351 A221352 A221353 * A221355 A221356 A221357
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 11 2013
STATUS
approved

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Last modified September 30 16:55 EDT 2024. Contains 376364 sequences.
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