A207004 Number of 7Xn 0..1 arrays avoiding 0 1 0 horizontally and 0 1 1 vertically.

54, 2916, 61003, 1124120, 22816988, 490003769, 10432265840, 218637649146, 4572897018607, 95971301545030, 2016876598616899, 42362715890770207, 889374671577272079, 18672246190599282488, 392068641835583132666

Offset: 1

Author

R. H. Hardin Feb 14 2012

Keywords

• nonn

Comments

Row 7 of A207000

Examples

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

Links

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