A207465 Number of nX6 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

18, 324, 1504, 11760, 71928, 491948, 3205650, 21396734, 141284580, 937096086, 6200491878, 41068721206, 271907375738, 1800712574474, 11924220367590, 78964416331158, 522900715972816, 3462653747527630, 22929637855256258

Offset: 1

Author

R. H. Hardin Feb 18 2012

Keywords

• nonn

Comments

Column 6 of A207467

Examples

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

Links

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