A221136 Number of nX5 arrays of occupancy after each element moves to some horizontal or vertical neighbor, with no occupancy greater than 2.

8, 1681, 200072, 31203396, 4235650596, 619901126244, 86907967843320, 12474883501876324, 1766575491615801750, 252036106134604983844, 35804312825751223799132, 5098360123415675049888964

Offset: 1

Author

R. H. Hardin Jan 02 2013

Keywords

• nonn

Comments

Column 5 of A221139

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..13