A221254 Number of nX7 arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2

32, 14112, 7356420, 4085800416, 2294073688498, 1286684357154700, 720107530988047980, 402418492897385719539, 224687866990231144007434, 125391176411370052357764435, 69957473447300728012460144928

Offset

1,1

Comments

Column 7 of A221255

Links

R. H. Hardin, Table of n, a(n) for n = 1..12

Example

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

Crossrefs

Sequence in context: A280100 A187240 A062315 * A159384 A230689 A248002

Adjacent sequences: A221251 A221252 A221253 * A221255 A221256 A221257

Keyword

nonn

Author

R. H. Hardin Jan 06 2013

Status

approved