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A207281 Number of nX6 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal 0
2902, 8421604, 6979630118, 7655462652196, 8271975196175318 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A207283

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

..1..2..0..3..3..0....2..0..1..1..3..2....1..0..2..1..3..3....2..0..0..2..1..1

..1..0..2..2..1..1....2..1..3..1..1..3....1..2..0..2..2..1....3..1..0..0..1..1

..0..0..2..1..0..3....2..1..3..3..0..1....2..0..0..2..0..2....3..3..3..1..1..0

..2..3..0..3..3..2....3..2..1..1..2..2....2..0..2..3..3..0....3..3..0..1..1..2

CROSSREFS

Sequence in context: A219963 A235102 A252267 * A207477 A207533 A054828

Adjacent sequences:  A207278 A207279 A207280 * A207282 A207283 A207284

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 16 2012

STATUS

approved

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Last modified January 20 14:02 EST 2020. Contains 331094 sequences. (Running on oeis4.)