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A361991
Number of prime knotoids in a sphere with n crossings.
0
0, 1, 2, 8, 24, 121
OFFSET
1,3
COMMENTS
Knotoids are represented by diagrams in a surface which differ from the usual knot diagrams in that the underlying curve is a segment rather than a circle.
LINKS
Dimos Goundaroulis, Julien Dorier and Andrzej Stasiak, A systematic classification of knotoids on the plane and on the sphere, arXiv:1902.07277 [math.GT], 2019.
Vladimir Turaev, Knotoids, arXiv:1002.4133 [math.GT], 2010.
CROSSREFS
Cf. A002863.
Sequence in context: A123775 A052624 A272590 * A087982 A176475 A145238
KEYWORD
nonn,more
AUTHOR
STATUS
approved