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A221268 Number of nX4 arrays of occupancy after each element stays put or moves to some king-move neighbor, with no occupancy greater than 2 0
17, 1073, 71977, 5007745, 355645325, 25512853201, 1838393941445, 132717282488753, 9588278602742109, 692914031177971849 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A221269

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

..2..0..2..0....0..2..1..0....0..2..2..0....0..0..0..1....2..1..1..0

..0..2..1..0....0..2..1..2....0..0..2..0....1..2..2..2....1..1..1..0

..2..2..1..0....2..0..0..2....0..2..2..2....2..1..0..1....2..0..2..1

CROSSREFS

Sequence in context: A221376 A077645 A046731 * A179157 A130449 A130035

Adjacent sequences:  A221265 A221266 A221267 * A221269 A221270 A221271

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 08 2013

STATUS

approved

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Last modified April 23 02:15 EDT 2019. Contains 322380 sequences. (Running on oeis4.)