A221487 Number of 5Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction

0, 256, 1980, 865318, 48514602, 6681667775, 579209730382, 63151886490539, 6122578678693488, 629811753399775239

Offset

1,2

Comments

Row 5 of A221483

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A205363 A237340 A237333 * A014711 A236451 A236445

Adjacent sequences: A221484 A221485 A221486 * A221488 A221489 A221490

Keyword

nonn

Author

R. H. Hardin Jan 17 2013

Status

approved