A089753 Number of projections of alternating knots and links with n crossings.

1, 1, 2, 3, 9, 18, 62, 201, 815

Offset

2,3

Comments

The sequence can presumably be found in the microfiche of Doll and Hostie (1991). The sequences in Table 3.1 of the paper seem to be related just to the specific algorithm being used, and therefore have not been included in the OEIS. - N. J. A. Sloane, Sep 02 2018

Links

Table of n, a(n) for n=2..10.

Helmut Doll and Jim Hoste, A tabulation of oriented links, Mathematics of Computation, Vol. 57, #196 (1991), pp. 747-761 plus microfiche supplement.

Slavik Jablan, Ordering Knots.

Slavik Jablan and Radmila Sazdanovic, LinKnot.

Crossrefs

Sequence in context: A108827 A298347 A113201 * A094679 A298357 A094812

Adjacent sequences: A089750 A089751 A089752 * A089754 A089755 A089756

Keyword

nonn,more

Author

Slavik Jablan and Radmila Sazdanovic, Jan 08 2004

Status

approved