A018891 - OEIS

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A018891

Number of positive knots with n crossings.

0, 0, 1, 0, 1, 0, 1, 1, 1, 3, 2, 7, 9, 17, 47 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,10`
	LINKS	`Table of n, a(n) for n=1..15.` `D. J. Broadhurst and D. Kreimer, Association of multiple zeta values with positive knots via Feynman diagrams up to 9 loops, Phys. Lett. B 393, No.3-4, 403-412 (1997).`
	CROSSREFS	`Sequence in context: A026186 A026210 A118966 * A034423 A193859 A174330` `Adjacent sequences: A018888 A018889 A018890 * A018892 A018893 A018894`
	KEYWORD	`nonn,nice`
	AUTHOR	`David Broadhurst`
	STATUS	`approved`

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Last modified May 22 23:20 EDT 2013. Contains 225585 sequences.