This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A059741 #22 Jul 19 2025 10:11:17 %S A059741 0,1,0,1,1,3,6,14,42,121,384,1408,5100,21854,92234,427079,2005800, %T A059741 9716848,48184018,241210386,1228973463,6301831944,32663182521, %U A059741 170407462900 %N A059741 Prime unoriented alternating links with n crossings and 2 components. %H A059741 S. R. Finch, <a href="http://www.people.fas.harvard.edu/~sfinch/">Knots, links and tangles</a> %H A059741 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 A059741 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 A059741 Bruce Fontaine, <a href="https://pi.math.cornell.edu/~bfontain/knots.html">Knots/Links</a> %H A059741 Stuart Rankin, <a href="https://web.archive.org/web/20150912132830/http://www-home.math.uwo.ca/~srankin/knotprint.html">Knot Theory Work of Ortho Flint and Stuart Rankin</a> %H A059741 M. B. Thistlethwaite, <a href="https://web.math.utk.edu/~mthistle/">Home Page</a> %H A059741 M. B. Thistlethwaite, <a href="https://web.math.utk.edu/~mthistle/png/link_stats.png">Numbers of knots and links with up to 19 crossings</a> %Y A059741 Column 2 of A059739. Cf. A002864. %K A059741 nonn,more %O A059741 1,6 %A A059741 _N. J. A. Sloane_, Feb 10 2001 %E A059741 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007 %E A059741 a(23)-a(24) corrected using Bruce Fontaine's table by _Andrey Zabolotskiy_, Jun 08 2022