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A208810 Number of n-bead necklaces labeled with numbers -4..4 not allowing reversal, with sum zero and three times sum of squares <= n*(4)*(4+1). 0
1, 3, 13, 82, 455, 3375, 22939, 164311, 1295113, 9606295, 73033205, 600317013, 4678388841, 36709902179, 309541490733 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A208814.
LINKS
EXAMPLE
Some solutions for n=6:
.-3...-2...-3...-3...-3...-4...-3...-4...-4...-4...-2...-4...-1...-3...-2...-2
..1....0....1...-1....3....1....2....2....2....2....2....2....0...-2....3....0
..1....3...-2....4....0....3....2....2...-2...-2...-1....1...-1....2...-1...-2
..0...-1....0...-1...-2....2...-1....1....1....3....0...-2....0....0....2....1
.-1...-1....3...-1....2....0....2...-3....2...-1...-2....1...-1....4...-1....4
..2....1....1....2....0...-2...-2....2....1....2....3....2....3...-1...-1...-1
CROSSREFS
Sequence in context: A000684 A222272 A057993 * A348116 A219906 A000904
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2012
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)