A207289 Number of nX7 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column

14124, 199487376, 2270955601878, 26429424077425891, 305856308413400619700, 3544370001734720482621378, 41064557653205497965204017422, 475795131459683212276243522860158, 5512751277877232396333620887048914890

Offset

1,1

Comments

Column 7 of A207290

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Sequence in context: A206845 A206837 A206899 * A249192 A204282 A134610

Adjacent sequences: A207286 A207287 A207288 * A207290 A207291 A207292

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved