A089891 Number of knots and links with unknotting (unlinking) number U=1.

1, 1, 1, 2, 3, 5, 12, 21

Offset: 2

Author

Slavik Jablan and Radmila Sazdanovic, Jan 10 2004

Keywords

• nonn
• more

References

• A. Kawauchi, A Survey of Knot Theory, Birkhäuser, Basel, Boston, Berlin, 1996.

Links

• Slavik Jablan, Ordering Knots.
• Slavik Jablan and Radmila Sazdanovic, LinKnot.
• P. Kohn, Unlinking two component links, Osaka J. Math. 30(4), 741-752 (1993).

Crossrefs

Cf. A078477.