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Search: id:A052418
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| A052418 |
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Number of n-crossing knots having symmetry group D4. |
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+0
1
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| 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 11, 18, 21, 31, 53, 89
(list; graph; listen)
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OFFSET
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1,7
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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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Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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CROSSREFS
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Cf. A052415, ..., A052426.
Sequence in context: A130640 A116068 A104420 this_sequence A051800 A121432 A118968
Adjacent sequences: A052415 A052416 A052417 this_sequence A052419 A052420 A052421
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KEYWORD
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nonn,hard
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com)
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