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Search: id:A008984
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| A008984 |
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Number of immersions of the oriented circle into the oriented plane with n double points and index 1. |
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+0
7
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OFFSET
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0,3
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REFERENCES
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V. I. Arnold, Topological Invariants of Plane Curves..., American Math. Soc., 1994, p. 18.
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CROSSREFS
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Cf. A008980, A008981, A008982, A008983, A008985, A054993.
Sequence in context: A151046 A084781 A151047 this_sequence A151048 A149038 A097148
Adjacent sequences: A008981 A008982 A008983 this_sequence A008985 A008986 A008987
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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