A221481 Number of nX6 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction

1, 1713, 182524, 37622097, 6681667775, 1224264741193, 224856636340095

Offset

1,2

Comments

Column 6 of A221483

Links

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

Example

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

Crossrefs

Sequence in context: A227218 A280113 A242102 * A008744 A184090 A297560

Adjacent sequences: A221478 A221479 A221480 * A221482 A221483 A221484

Keyword

nonn

Author

R. H. Hardin Jan 17 2013

Status

approved