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A089752 Number of projections of alternating knots with n crossings. 0


%S 1,0,1,1,2,3,10,27,101,364,1562

%N Number of projections of alternating knots with n crossings.

%D 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]

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

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

%H Jablan S., <a href="http://www.mi.sanu.ac.rs/vismath/sl/index.html">Ordering Knots</a>.

%H Jablan S., Sazdanovic R., <a href="http://www.mi.sanu.ac.rs/vismath/linknot/index.html">LinKnot</a>.

%K nonn,more

%O 1,5

%A Slavik Jablan and Radmila Sazdanovic, Jan 08 2004

%E Added a(1) and a(2). - _N. J. A. Sloane_, Jun 10 2019

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Last modified August 9 05:12 EDT 2020. Contains 336319 sequences. (Running on oeis4.)