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A221431 Number of nX3 arrays of occupancy after each element moves to some king-move neighbor, without consecutive moves in the same direction 0
0, 286, 7573, 378956, 14043932, 581171214, 22893790059, 919540911485, 36619267868969, 1463288838011586 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A221432

LINKS

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

EXAMPLE

Some solutions for n=3

..0..0..0....1..0..0....0..2..0....0..0..1....0..4..0....0..3..1....0..3..1

..1..3..1....1..5..0....3..0..0....3..5..0....1..0..2....2..0..2....1..0..2

..2..1..1....1..1..0....0..4..0....0..0..0....1..1..0....0..0..1....2..0..0

CROSSREFS

Sequence in context: A027798 A072817 A117994 * A306144 A130433 A140926

Adjacent sequences:  A221428 A221429 A221430 * A221432 A221433 A221434

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 16 2013

STATUS

approved

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Last modified December 8 08:31 EST 2021. Contains 349594 sequences. (Running on oeis4.)