A221327 Number of nX7 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

239, 337274, 487335857, 711858713069, 1043094530574190, 1529318909534974055, 2242286238164144345340, 3287567392078817733944559, 4820042020725407512778215418, 7066803372580254890277247530238

Offset: 1

Author

R. H. Hardin Jan 11 2013

Keywords

• nonn

Comments

Column 7 of A221328

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..14