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%I #3 Mar 30 2012 16:49:18
%S 0,1,1,3,9,21,101,346,1576,7040,31556,153916,724758,3610768,17853814,
%T 90220450,460221672,2365627740,12300901598
%N Number of prime alternating tangles (or knots) of type Gamma_2 with two connected components.
%H J. L. Jacobsen and P. Zinn-Justin, <a href="http://arXiv.org/abs/math-ph/0102015">A Transfer Matrix approach to the Enumeration of Knots</a>
%H J. L. Jacobsen and P. Zinn-Justin, <a href="http://arXiv.org/abs/math-ph/0104009">A Transfer Matrix approach to the Enumeration of Colored Links</a>, J. Knot Theory, 10 (2001), 1233-1267.
%Y Cf. A067644, A067646.
%K nonn
%O 0,4
%A _N. J. A. Sloane_, Feb 05 2002
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