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A052415
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Number of n-crossing knots having symmetry group D1.
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6
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0, 0, 0, 0, 0, 0, 0, 4, 13, 66, 217, 728, 2391, 7575, 23517, 73263
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OFFSET
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1,8
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REFERENCES
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Hoste, J.; Thistlethwaite, M.; and Weeks, J. "The First 1,701,936 Knots." Math. Intell., 20, 33-48, Fall 1998.
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LINKS
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Table of n, a(n) for n=1..16.
Eric Weisstein's World of Mathematics, Knot Symmetry.
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CROSSREFS
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Cf. A052415, ..., A052426.
Sequence in context: A135312 A005035 A222771 * A129433 A157311 A096805
Adjacent sequences: A052412 A052413 A052414 * A052416 A052417 A052418
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KEYWORD
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nonn,hard
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AUTHOR
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Eric W. Weisstein
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STATUS
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approved
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