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%I #10 Jun 10 2024 15:01:04
%S 0,0,1,1,2,9,29,133,594,2864
%N Number of immersions of oriented circle into oriented sphere with n double points and no simple loop.
%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 6.
%Y Cf. A008986, A264761, A268569, A268570, A268571, A268572.
%K nonn,more
%O 1,5
%A _N. J. A. Sloane_, Mar 03 2016
%E Name clarified by _Andrey Zabolotskiy_, Jun 09 2024