A221000 Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor

55, 29135, 14113081, 6758547145, 3229188933738, 1542208831960569, 736464037749057990, 351682265933341657231

Offset

1,1

Comments

Column 5 of A221001

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Sequence in context: A033512 A201008 A172722 * A196428 A231907 A027580

Adjacent sequences: A220997 A220998 A220999 * A221001 A221002 A221003

Keyword

nonn

Author

R. H. Hardin Dec 28 2012

Status

approved