A206876 Number of 7Xn 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically.

65, 4225, 78799, 2841311, 95207761, 2805723059, 90497940567, 2863087460903, 89499787923617, 2831117517162739, 89219013685261269, 2809084210921214817, 88579091493698602265, 2791355238871425908621, 87960857432849796359965

Offset: 1

Author

R. H. Hardin Feb 13 2012

Keywords

• nonn

Comments

Row 7 of A206871

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210