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A221786
Number of nX7 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops or left turns
0
0, 55, 840, 15936, 252538, 4781652, 76353254, 1402260000, 23429257696
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A221787
LINKS
Table of n, a(n) for n=1..9.
EXAMPLE
Some solutions for n=3
..0..2..2..1..0..2..1....0..2..2..1..2..2..1....0..2..2..2..2..1..0
..0..2..1..0..1..1..0....0..1..0..0..1..2..0....0..1..1..2..1..1..0
..1..1..2..1..1..2..0....1..2..1..1..1..1..0....0..0..1..1..2..2..0
CROSSREFS
Sequence in context: A053138 A027784 A297523 * A358634 A241634 A008402
Adjacent sequences: A221783 A221784 A221785 * A221787 A221788 A221789
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 25 2013
STATUS
approved

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Last modified March 12 05:02 EDT 2025. Contains 381668 sequences.
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