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A268562
Number of bicolored immersions of oriented circle into oriented surface with n double points, up to stable geotopy.
1
2, 6, 20, 108, 776, 7772, 92172, 1291048, 20644140
OFFSET
1,1
LINKS
Robert Coquereaux and Jean-Bernard Zuber, Maps, immersions and permutations, Journal of Knot Theory and Its Ramifications, Vol. 25, No. 8 (2016), 1650047; arXiv preprint, arXiv:1507.03163 [math.CO], 2015-2016. See Table 9, line OOc total.
CROSSREFS
Cf. A268559.
Sequence in context: A078566 A076323 A241782 * A287009 A243252 A366760
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Mar 02 2016
EXTENSIONS
Name clarified by Andrey Zabolotskiy, Jun 09 2024
STATUS
approved