A089892 Number of knots with unknotting number U=1.

1, 1, 1, 3, 3, 9, 17, 44

Offset

3,4

References

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

Links

Table of n, a(n) for n=3..10.

Slavik Jablan, Ordering Knots.

Slavik Jablan and Radmila Sazdanovic, LinKnot.

Crossrefs

Cf. A078477.

Sequence in context: A232948 A241357 A217450 * A038221 A099465 A099094

Adjacent sequences: A089889 A089890 A089891 * A089893 A089894 A089895

Keyword

nonn,more

Author

Slavik Jablan and Radmila Sazdanovic, Jan 10 2004

Status

approved