A268562 Number of bicolored immersions of oriented circle into oriented surface with n double points, up to stable geotopy.

2, 6, 20, 108, 776, 7772, 92172, 1291048, 20644140

Offset: 1

Author

N. J. A. Sloane, Mar 02 2016

Keywords

• nonn
• more

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.

Extensions

Name clarified by Andrey Zabolotskiy, Jun 09 2024