A221254 - OEIS

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

(list; graph; refs; listen; history; text; internal format)

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