A199653 Number of nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors

122, 67774, 31120632, 14399942873, 6663970316970, 3083761998081891, 1427019666767669979, 660357476435139192982, 305582323780950052573456, 141409100632588861437301956, 65437468685616944338442793185

Offset

1,1

Comments

Column 6 of A199655

Links

R. H. Hardin, Table of n, a(n) for n = 1..149

Example

Some solutions for n=3
..0..0..0..1..1..0....0..0..0..0..1..0....0..0..0..1..1..0....0..0..0..1..1..0
..0..1..1..1..0..0....0..1..2..0..1..0....0..1..2..0..2..2....0..1..0..2..1..2
..0..0..0..2..0..1....0..0..0..2..0..1....0..0..0..0..2..1....0..0..1..0..1..2

Crossrefs

Sequence in context: A223131 A208256 A198714 * A241112 A240705 A208320

Adjacent sequences: A199650 A199651 A199652 * A199654 A199655 A199656

Keyword

nonn

Author

R. H. Hardin Nov 08 2011

Status

approved