A207518 Number of nX7 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically

31, 961, 6115, 68807, 600283, 5849409, 54373655, 516879019, 4866171581, 46008055407, 434073335621, 4098491207569, 38682074952657, 365164477339623, 3447077980972367, 32541367521606267, 307192500866436479

Offset

1,1

Comments

Column 7 of A207519

Links

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

Example

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

Crossrefs

Sequence in context: A207418 A223393 A207390 * A207067 A207122 A207247

Adjacent sequences: A207515 A207516 A207517 * A207519 A207520 A207521

Keyword

nonn

Author

R. H. Hardin Feb 18 2012

Status

approved