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A189492
Number of arrangements of n+1 nonzero numbers x(i) in -3..3 with the sum of floor(x(i)/x(i+1)) equal to zero.
1
6, 38, 152, 928, 4920, 27508, 152358, 852940, 4796962, 27117826, 153988846, 877458110, 5015185460, 28736333450, 165022598514, 949503677434, 5472715411708, 31592116727316, 182623690514234, 1057008913476932
OFFSET
1,1
COMMENTS
Column 3 of A189498.
LINKS
EXAMPLE
Some solutions for n=5
.-3....2...-3...-2...-3....2....3...-1....2....2...-1...-3...-1....2....2...-1
.-2...-3...-1...-1...-2...-2...-1....2....2....1....2...-2...-1...-2...-3...-1
.-1....2...-2...-3...-2....3...-1....2...-2...-3....1....2...-3...-2...-2...-3
.-3....1....1...-3...-2...-3...-3...-1...-3....2...-1...-2...-3...-1....1....2
..2....1....2....3....1...-2...-1....3....2....1....1...-3....1....2....1....1
.-2....3...-2...-2...-2...-1....1....1....1...-3....1...-3....1...-2....1...-2
CROSSREFS
Cf. A189498.
Sequence in context: A060452 A229620 A045949 * A281803 A288030 A264502
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 23 2011
STATUS
approved