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Search: id:A008986
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| A008986 |
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Number of immersions of oriented circle into oriented sphere with n double points. |
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+0
1
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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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Sequence in context: A119856 A077365 A006229 this_sequence A105215 A158053 A009179
Adjacent sequences: A008983 A008984 A008985 this_sequence A008987 A008988 A008989
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Two more terms from Guy H. Valette (guy.valette(AT)skynet.be), Feb 09 2004
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