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A110890 Number of spindle configurations of n skew lines, up to isotopy, which are amphichiral. 0
1, 1, 0, 1, 1, 3, 0, 12, 5, 83, 0, 808, 47 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

COMMENTS

a(n)=0 for n=3 (mod 4)

LINKS

Table of n, a(n) for n=1..13.

R. Bacher and D. Garber, Spindle configurations of skew lines

CROSSREFS

Sequence in context: A140093 A194093 A055314 * A249010 A071534 A336667

Adjacent sequences:  A110887 A110888 A110889 * A110891 A110892 A110893

KEYWORD

more,nonn

AUTHOR

David Garber, Sep 20 2005

STATUS

approved

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Last modified July 27 05:26 EDT 2021. Contains 346305 sequences. (Running on oeis4.)