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A089790 Number of projections of rational knots and links. with n crossings. 0
1, 1, 2, 3, 7, 14, 38, 98, 300, 937 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,3

REFERENCES

Caudron, A. (1982) Classification des noeuds et des enlancements, Public. Math. d'Orsay 82. Univ. Paris Sud, Dept. Math., Orsay.

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=2..11.

Jablan S., Ordering Knots.

Jablan S. and Sazdanovic R., LinKnot.

CROSSREFS

Cf. A005418= number of rational knots and links.

Sequence in context: A123777 A090828 A049367 * A006785 A113182 A165433

Adjacent sequences:  A089787 A089788 A089789 * A089791 A089792 A089793

KEYWORD

nonn

AUTHOR

Slavik Jablan and Radmila Sazdanovic (jablans(AT)yahoo.com), Jan 09 2004

STATUS

approved

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Last modified May 24 00:43 EDT 2013. Contains 225613 sequences.