A221259 Number of 5Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with no occupancy greater than 2.

0, 256, 418, 1612900, 78633756, 22466712321, 2294073688498, 399487764096100, 51031822108216122, 7730096571419434884, 1061888266253693915768, 154122481474602369093121, 21681358901642544133423968

Offset: 1

Author

R. H. Hardin Jan 06 2013

Keywords

• nonn

Comments

Row 5 of A221255

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15