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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 1
122, 67774, 31120632, 14399942873, 6663970316970, 3083761998081891, 1427019666767669979, 660357476435139192982, 305582323780950052573456, 141409100632588861437301956, 65437468685616944338442793185 (list; graph; refs; listen; history; text; internal format)
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

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Last modified November 30 21:57 EST 2022. Contains 358453 sequences. (Running on oeis4.)