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A207234 Number of nX7 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal 0
1121, 1256641, 191801477, 68168506265, 22315875854161, 6288613378797777, 1735838281998728881, 487608742366796981785 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A207235

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A028464 A225995 A122052 * A207227 A207014 A203189

Adjacent sequences:  A207231 A207232 A207233 * A207235 A207236 A207237

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 16 2012

STATUS

approved

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Last modified September 25 10:14 EDT 2020. Contains 337337 sequences. (Running on oeis4.)