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A217345
Number of n X 7 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops.
0
0, 4367, 8399702, 12350550690, 16858052804062, 22467362744958042
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OFFSET
1,2
COMMENTS
Column 7 of
A217346
.
LINKS
Table of n, a(n) for n=1..6.
EXAMPLE
Some solutions for n=3
..0..1..0..2..1..1..1....0..1..0..1..1..2..1....0..1..0..1..1..1..1
..0..2..2..2..1..0..2....0..1..3..3..1..0..1....0..2..1..1..2..2..2
..1..2..1..0..2..0..0....1..1..1..1..2..0..0....1..1..0..1..1..1..1
CROSSREFS
Cf.
A217346
.
Sequence in context:
A031564
A359490
A347603
*
A140937
A327789
A043598
Adjacent sequences:
A217342
A217343
A217344
*
A217346
A217347
A217348
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Oct 01 2012
STATUS
approved
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Last modified August 30 07:09 EDT 2024. Contains 375532 sequences. (Running on oeis4.)