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A289655
Subset of
A008989
containing one or more simple loops.
0
0, 1, 2, 5, 18, 74, 371, 2178
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OFFSET
0,3
COMMENTS
It appears (although it is not certain) that
A268571
(n) =
A008989
(n) - a(n).
LINKS
Table of n, a(n) for n=0..7.
Guy Valette,
A Classification of Spherical Curves Based on Gauss Diagrams
, Arnold Math. J. (2016) 2:383-405, DOI 10.1007/s40598-016-0049-3.
CROSSREFS
Cf.
A008989
,
A268571
.
Sequence in context:
A344262
A352985
A319121
*
A189281
A006848
A208968
Adjacent sequences:
A289652
A289653
A289654
*
A289656
A289657
A289658
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Jul 17 2017
STATUS
approved
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Last modified September 2 16:28 EDT 2024. Contains 375613 sequences. (Running on oeis4.)