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A008984
Number of immersions of the oriented circle into the oriented plane with n double points and index n-1.
6
1, 1, 3, 10, 35, 133
OFFSET
0,3
REFERENCES
V. I. Arnold, Topological Invariants of Plane Curves and Caustics, American Math. Soc., 1994, p. 18.
CROSSREFS
KEYWORD
nonn,nice,more
EXTENSIONS
Name corrected by Andrey Zabolotskiy, Oct 22 2023
STATUS
approved