A221692 Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction.

60, 92660, 74531185, 64509677154, 55433846144035, 47681199145323119, 41016076097898190730, 35282822653645381320038, 30350969754572497969358415, 26108492570724327368100591178, 22459031054635514974048155933027

Offset: 1

Author

R. H. Hardin Jan 22 2013

Keywords

• nonn

Comments

Column 6 of A221693

Examples

			Some solutions for n=3
..0..1..0..2..1..2....0..1..0..1..1..0....0..1..0..1..2..0....0..1..0..2..1..1
..1..1..0..0..1..1....1..1..3..1..1..0....1..1..3..1..1..0....1..1..1..1..0..1
..1..4..0..0..3..0....1..2..1..3..0..1....1..1..1..0..3..1....1..1..2..1..1..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..25