A207580 Number of nX6 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically

3353, 11242609, 28493353430, 71203824562653, 177514813568428241, 442453214562156086168, 1102841040771965457584054, 2748914689106732445807554251, 6851779973805256016846438293890

Offset

1,1

Comments

Column 6 of A207582

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

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

Crossrefs

Sequence in context: A206978 A206972 A206575 * A207055 A251831 A104938

Adjacent sequences: A207577 A207578 A207579 * A207581 A207582 A207583

Keyword

nonn

Author

R. H. Hardin Feb 19 2012

Status

approved