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

Author

R. H. Hardin Jan 06 2013

Keywords

• nonn

Comments

Column 7 of A221255

Examples

			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
		

Links

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