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%I #18 Feb 04 2019 16:58:00
%S 1,1,3,11,69,602,6531,84737,1271143,21623667,411133711,8639077230,
%T 198801435313,4972210166209,134299831740091,3895950849227855,
%U 120808412263797173,3987662458459383826,139598735205063044939
%N Number of chord diagrams of degree n with an isolated chord of length 1.
%H D. Bar-Natan, <a href="http://www.math.toronto.edu/drorbn/papers/OnVassiliev/index.html">On the Vassiliev Knot Invariants</a>, Topology 34 (1995) 423-472.
%H D. Bar-Natan, <a href="http://www.pdmi.ras.ru/~duzhin/VasBib/">Bibliography of Vassiliev Invariants</a>
%H Alexander Stoimenow, <a href="http://dx.doi.org/10.1016/S0012-365X(99)00347-7">On the number of chord diagrams</a>, Discr. Math. 218 (2000), 209-233.
%t Stoimenow states that a Mma package is available from his website. - _N. J. A. Sloane_, Jul 26 2018
%K nonn
%O 1,3
%A Alexander Stoimenow (stoimeno(AT)math.toronto.edu)
%E More terms from _Sean A. Irvine_, Feb 04 2019