A207578 Number of nX4 0..3 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically

232, 53824, 10346480, 1970169608, 374571613718, 71203824562653, 13535979641561061, 2573229281243934565, 489173996571459881745, 92992485278748462877948, 17677953484864963770195712

Offset

1,1

Comments

Column 4 of A207582

Links

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

Example

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

Crossrefs

Sequence in context: A206976 A206963 A206573 * A209088 A207053 A207130

Adjacent sequences: A207575 A207576 A207577 * A207579 A207580 A207581

Keyword

nonn

Author

R. H. Hardin Feb 19 2012

Status

approved