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A206576 Number of nX7 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal 0
12747, 162486009, 1211164182464, 8882668617521828, 64829265966214645776, 473233846073429226663536 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A206577

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A275158 A206979 A206973 * A207581 A207056 A210105

Adjacent sequences: A206573 A206574 A206575 * A206577 A206578 A206579

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2012

STATUS

approved

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Last modified March 20 22:57 EDT 2023. Contains 361392 sequences. (Running on oeis4.)