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Number of bicolored immersions of oriented circle into oriented surface with n double points, up to stable geotopy.
1

%I #10 Jun 10 2024 15:00:55

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

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

%H Robert Coquereaux and Jean-Bernard Zuber, <a href="https://doi.org/10.1142/S0218216516500474">Maps, immersions and permutations</a>, Journal of Knot Theory and Its Ramifications, Vol. 25, No. 8 (2016), 1650047; <a href="https://arxiv.org/abs/1507.03163">arXiv preprint</a>, arXiv:1507.03163 [math.CO], 2015-2016. See Table 9, line OOc total.

%Y Cf. A268559.

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, Mar 02 2016

%E Name clarified by _Andrey Zabolotskiy_, Jun 09 2024