A206576 Number of nX7 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal

12747, 162486009, 1211164182464, 8882668617521828, 64829265966214645776, 473233846073429226663536

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