A018891 - OEIS

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A018891

Number of positive knots with n crossings.

1

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).

Index entries for sequences related to knots

CROSSREFS

Sequence in context: A351903 A359973 A348535 * A034423 A193859 A174330

Adjacent sequences: A018888 A018889 A018890 * A018892 A018893 A018894

KEYWORD

nonn,nice

AUTHOR

David Broadhurst

STATUS

approved