A207278 Number of nX3 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal

58, 3364, 121014, 4686270, 181121542, 6979630118, 268686202446, 10346388676890, 398484229526944, 15347093146481576, 591056573797250302, 22763124435331083444, 876670255366683199756, 33762986640905791961506

Offset

1,1

Comments

Column 3 of A207283

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A278097 A299467 A334935 * A207474 A207530 A042625

Adjacent sequences: A207275 A207276 A207277 * A207279 A207280 A207281

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved