A207286 Number of nX4 0..3 arrays avoiding the pattern z-2 z-1 z in any row or column

241, 58081, 12359893, 2663436930, 572065794890, 122968569630173, 26429424077425891, 5680621805739504100, 1220959989610537371341, 262426428942956734097739, 56404478394058146229795829

Offset

1,1

Comments

Column 4 of A207290

Links

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

Example

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

Crossrefs

Sequence in context: A206842 A206834 A206896 * A217998 A183891 A120377

Adjacent sequences: A207283 A207284 A207285 * A207287 A207288 A207289

Keyword

nonn

Author

R. H. Hardin Feb 16 2012

Status

approved