|
| |
|
|
A086771
|
|
Prime links (not necessarily connected knots) with n crossings.
|
|
2
| |
|
|
0, 1, 1, 2, 3, 9, 16, 50, 132, 452, 1559
(list; graph; refs; listen; history; internal format)
|
|
|
|
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: A023147 A095742 A011951 * A156066 A143890 A056658
Adjacent sequences: A086768 A086769 A086770 * A086772 A086773 A086774
|
|
|
KEYWORD
| nonn,nice
|
|
|
AUTHOR
| S. R. Finch (Steven.Finch(AT)inria.fr), Aug 02 2003
|
| |
|
|
