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A018192
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Number of chord diagrams of degree n with an isolated chord.
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0
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OFFSET
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1,3
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REFERENCES
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Bar-Natan, Dror, On the Vassiliev knot invariants. Topology 34, No. 2, 423-472 (1995).
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LINKS
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Table of n, a(n) for n=1..10.
D. Bar-Natan, Bibliography of Vassiliev Invariants
Alexander Stoimenow, On the number of chord diagrams, Discr. Math. 218 (2000), 209-233.
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CROSSREFS
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Sequence in context: A121945 A009025 A009103 * A056665 A127716 A035378
Adjacent sequences: A018189 A018190 A018191 * A018193 A018194 A018195
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KEYWORD
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nonn
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AUTHOR
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Alexander Stoimenow (stoimeno(AT)math.toronto.edu)
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STATUS
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approved
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