This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A268559 #9 Jun 10 2024 15:00:46 %S A268559 2,3,14,54,420,3886,46470,645524,10328214 %N A268559 Number of bicolored immersions of unoriented circle into oriented surface with n double points, up to stable geotopy. %H A268559 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 UOc total. %Y A268559 Cf. A268561, A268562. %K A268559 nonn,more %O A268559 1,1 %A A268559 _N. J. A. Sloane_, Mar 02 2016 %E A268559 Name clarified by _Andrey Zabolotskiy_, Jun 09 2024