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A086771 Prime links (not necessarily connected knots) with n crossings. +0
3
0, 1, 1, 2, 3, 9, 16, 50, 132, 452, 1559 (list; graph; listen)
OFFSET

1,4

REFERENCES

D. J. A. Welsh, On the number of knots and links, Sets, Graphs and Numbers (Budapest, 1991) 713-718, Colloq. Math. Soc. Janos Bolyai, 60, North-Holland, Amsterdam, 1992.

LINKS

D. Bar-Natan, The Hoste-Thistlethwaite Link Table.

R. G. Scharein, Number of Prime Links.

Eric Weisstein's World of Mathematics, Prime Link

S. R. Finch, Knots, links and tangles

CROSSREFS

Cf. A002863, A048952, A048953.

Sequence in context: A092638 A095742 A011951 this_sequence A143890 A056658 A034467

Adjacent sequences: A086768 A086769 A086770 this_sequence A086772 A086773 A086774

KEYWORD

nonn,nice

AUTHOR

S. R. Finch (Steven.Finch(AT)inria.fr), Aug 02 2003

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.


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