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A089752 Number of projections of alternating knots with n crossings. 0
1, 0, 1, 1, 2, 3, 10, 27, 101, 364, 1562 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

REFERENCES

Ito, Noboru; and Takimura, Yusuke, The tabulation of prime knot projections with their mirror images up to eight double points. Topol. Proc. 53, 177-199 (2019). [Reference supplied by K. A. Perko, Jr., Jun 09 2019]

Kirkman T.P.: The enumeration, description and construction of knots of fewer than ten crossings. Trans. Roy. Soc. Edinburgh 32 (1885), 281-309.

Tait P.G.: On knots. Trans. Roy. Soc. Edin. 28 (1876/77), 145-190.

LINKS

Table of n, a(n) for n=1..11.

Jablan S., Ordering Knots.

Jablan S., Sazdanovic R., LinKnot.

CROSSREFS

Sequence in context: A151415 A134588 A000060 * A264759 A323680 A171190

Adjacent sequences:  A089749 A089750 A089751 * A089753 A089754 A089755

KEYWORD

nonn,more

AUTHOR

Slavik Jablan and Radmila Sazdanovic, Jan 08 2004

EXTENSIONS

Added a(1) and a(2). - N. J. A. Sloane, Jun 10 2019

STATUS

approved

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Last modified July 7 18:15 EDT 2020. Contains 335498 sequences. (Running on oeis4.)