A221332 Number of 5Xn arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2

1, 3363, 571358, 131347807, 26135748494, 5264460642473, 1043094530574190, 206296461646686083, 40696390245562531399, 8021014977002231894704, 1580039716596918034100062, 311140535645141827979564485

Offset

1,2

Comments

Row 5 of A221328

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Sequence in context: A233356 A035778 A108002 * A163044 A069367 A031556

Adjacent sequences: A221329 A221330 A221331 * A221333 A221334 A221335

Keyword

nonn

Author

R. H. Hardin Jan 11 2013

Status

approved