A208168 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically

31, 961, 6759, 46611, 258952, 1493661, 9072707, 53874293, 315713411, 1874906825, 11126711003, 65771372274, 389369462027, 2306918088206, 13657520785513, 80855461760683, 478802042582831, 2835088280044468, 16786245481948186

Offset

1,1

Comments

Row 7 of A208164

Links

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

Example

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

Crossrefs

Sequence in context: A207067 A207122 A207247 * A207441 A207431 A208373

Adjacent sequences: A208165 A208166 A208167 * A208169 A208170 A208171

Keyword

nonn

Author

R. H. Hardin Feb 24 2012

Status

approved