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A221505 Number of nX3 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without consecutive moves in the same direction 1
0, 44, 664, 12495, 221614, 4010052, 72195950, 1301644004, 23457033692, 422775316892, 7619575554956, 137327198061432, 2475032964645724, 44607285582888084, 803952693936738644, 14489560929396894421 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A221507
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0....0..3..0....0..4..0....1..1..0....0..1..1....0..1..0....0..0..0
..2..5..1....2..1..0....1..2..0....1..2..1....1..4..1....1..3..2....0..4..2
..0..1..0....1..2..0....0..0..2....0..3..0....0..1..0....0..2..0....1..2..0
CROSSREFS
Sequence in context: A289647 A252869 A296649 * A160066 A358794 A120812
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 18 2013
STATUS
approved

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Last modified April 13 08:31 EDT 2024. Contains 371638 sequences. (Running on oeis4.)