A209088 Number of nX4 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically

232, 53824, 10347649, 1971161340, 376488811859, 71929610916133, 13741947409424169, 2625341010784019740, 501560608046590007962, 95821111921567728826717, 18306232813135620198547558

Offset

1,1

Comments

Column 4 of A209092

Links

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

Example

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

Crossrefs

Sequence in context: A206963 A206573 A207578 * A207053 A207130 A125850

Adjacent sequences: A209085 A209086 A209087 * A209089 A209090 A209091

Keyword

nonn

Author

R. H. Hardin Mar 05 2012

Status

approved