A110890 - OEIS

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A110890

Number of spindle configurations of n skew lines, up to isotopy, which are amphichiral.

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`

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