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Search: id:A018891
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A018891 Number of positive knots with n crossings. +0
1
0, 0, 1, 0, 1, 0, 1, 1, 1, 3, 2, 7, 9, 17, 47 (list; graph; listen)
OFFSET

1,10

LINKS

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 this_sequence A034423 A099329 A143329

Adjacent sequences: A018888 A018889 A018890 this_sequence A018892 A018893 A018894

KEYWORD

nonn,nice

AUTHOR

David Broadhurst (D.Broadhurst(AT)open.ac.uk)

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.


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