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A217345 Number of nX7 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops 0
0, 4367, 8399702, 12350550690, 16858052804062, 22467362744958042 (list; graph; refs; listen; history; text; internal format)
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

Sequence in context: A125825 A031564 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 January 27 03:09 EST 2022. Contains 350601 sequences. (Running on oeis4.)