A207533 Number of nX6 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column

2902, 8421604, 14111752738, 26097329476130, 47621224240269788, 87012971830189045874

Offset

1,1

Comments

Column 6 of A207535

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=4
..2..2..1..0..0..3....2..2..0..1..2..3....0..1..1..3..2..2....3..1..3..0..1..1
..0..0..1..1..1..3....2..0..1..2..2..1....1..2..2..1..3..2....1..3..2..0..1..3
..3..3..2..1..1..2....1..0..2..2..3..3....1..3..3..0..1..3....2..2..1..1..3..2
..1..1..3..1..0..0....1..2..0..2..3..1....2..1..1..2..2..1....0..1..1..3..3..1

Crossrefs

Sequence in context: A252267 A207281 A207477 * A054828 A153412 A186819

Adjacent sequences: A207530 A207531 A207532 * A207534 A207535 A207536

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved