A221772 Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, without move-in move-out left turns

55, 18828, 6916881, 2541024755, 932759231192, 342291992210642, 125598125432396157

Offset

1,1

Comments

Column 5 of A221773

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A363869 A266031 A267424 * A221123 A231826 A163036

Adjacent sequences: A221769 A221770 A221771 * A221773 A221774 A221775

Keyword

nonn

Author

R. H. Hardin Jan 25 2013

Status

approved