A221482 Number of nX7 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction

0, 8235, 2017564, 1219698562, 579209730382, 290839286759257, 144288378372479004, 71554709571024301795

Offset

1,2

Comments

Column 7 of A221483

Links

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

Example

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

Crossrefs

Sequence in context: A168632 A230043 A045056 * A237221 A031850 A327418

Adjacent sequences: A221479 A221480 A221481 * A221483 A221484 A221485

Keyword

nonn

Author

R. H. Hardin Jan 17 2013

Status

approved