A221326 Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

99, 46211, 22181855, 10794156688, 5264460642473, 2568131772343102, 1252783082725664892, 611119758365760669838, 298107197445873504485520, 145417480551629396888700687, 70934889022803306796027176575

Offset: 1

Author

R. H. Hardin Jan 11 2013

Keywords

• nonn

Comments

Column 6 of A221328

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..16