A207133 Number of nX7 0..3 arrays avoiding the pattern z z+1 z in any row or column

12793, 163660849, 1521486186616, 13936149462971657, 128293375281298716166, 1181661762728423251688762

Offset

1,1

Comments

Column 7 of A207134

Links

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

Example

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

Crossrefs

Sequence in context: A206796 A206966 A209091 * A157509 A035916 A243050

Adjacent sequences: A207130 A207131 A207132 * A207134 A207135 A207136

Keyword

nonn

Author

R. H. Hardin Feb 15 2012

Status

approved