A209091 Number of nX7 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically

12793, 163660849, 1511450744648, 13741947409424169, 125502610636793867958, 1146755797140484005008568

Offset

1,1

Comments

Column 7 of A209092

Links

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

Example

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

Crossrefs

Sequence in context: A184780 A206796 A206966 * A207133 A157509 A035916

Adjacent sequences: A209088 A209089 A209090 * A209092 A209093 A209094

Keyword

nonn

Author

R. H. Hardin Mar 05 2012

Status

approved