A207055 Number of nX6 0..3 arrays avoiding the pattern z-1 z-1 z in any row or column

3353, 11242609, 28644905324, 72028285835462, 180748784643467362, 453485461047011453843, 1137807775272657922493117, 2854811979639509154006697625, 7162761328987498843729113806732

Offset

1,1

Comments

Column 6 of A207057

Links

R. H. Hardin, Table of n, a(n) for n = 1..11

Example

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

Crossrefs

Sequence in context: A206972 A206575 A207580 * A251831 A104938 A179704

Adjacent sequences: A207052 A207053 A207054 * A207056 A207057 A207058

Keyword

nonn

Author

R. H. Hardin Feb 14 2012

Status

approved