A209090 Number of nX6 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically

3361, 11296321, 28698007940, 71929610916133, 180986678798076799, 455585601029801268422, 1146755797140484005008568, 2886470185339791514614907107, 7265468650533511013141969489769

Offset

1,1

Comments

Column 6 of A209092

Links

R. H. Hardin, Table of n, a(n) for n = 1..15

Example

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

Crossrefs

Sequence in context: A061334 A206795 A206965 * A207132 A175534 A233356

Adjacent sequences: A209087 A209088 A209089 * A209091 A209092 A209093

Keyword

nonn

Author

R. H. Hardin Mar 05 2012

Status

approved