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%I #16 Jun 17 2021 09:15:10
%S 0,1,1,2,3,9,16,50,132,452,1559
%N Prime links (not necessarily connected knots) with n crossings.
%D D. J. A. Welsh, On the number of knots and links, Sets, Graphs and Numbers (Budapest, 1991) 713-718, Colloq. Math. Soc. Janos Bolyai, 60, North-Holland, Amsterdam, 1992.
%H D. Bar-Natan, <a href="http://katlas.org/wiki/The_Thistlethwaite_Link_Table">The Hoste-Thistlethwaite Link Table</a>.
%H S. R. Finch, <a href="http://www.people.fas.harvard.edu/~sfinch/">Knots, links and tangles</a>
%H S. R. Finch, <a href="/A002863/a002863_4.pdf">Knots, links and tangles</a>, Aug 08 2003. [Cached copy, with permission of the author]
%H Steven R. Finch, <a href="https://doi.org/10.1017/9781316997741">Mathematical Constants II</a>, Encyclopedia of Mathematics and Its Applications, Cambridge University Press, Cambridge, 2018, p. 627.
%H R. G. Scharein, <a href="https://knotplot.com/manual/PrimeLinks.html">Number of Prime Links</a>.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/PrimeLink.html">Prime Link</a>
%Y Cf. A002863, A048952, A048953, A049344, A086771.
%K nonn,nice,more
%O 1,4
%A _Steven Finch_, Aug 02 2003
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