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A018193 Number of chord diagrams of degree n with an isolated chord of length 1. 1

%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

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Last modified April 25 13:27 EDT 2024. Contains 371971 sequences. (Running on oeis4.)