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 A342289 #4 Mar 26 2021 20:16:08 %S A342289 0,1,2,6,22,91,405,1893,9163,45531,230902 %N A342289 Number of 3-row-restricted Baxter slicings of size n. %H A342289 Mathilde Bouvel, Veronica Guerrini, Andrew Rechnitzer, and Simone Rinaldi, <a href="https://arxiv.org/abs/1702.04529">Semi-Baxter and strong-Baxter: two relatives of the Baxter sequence</a>, arXiv:1702.04529 [math.CO], 2017. See p. 26. %Y A342289 Cf. A001181, A342290, A342291, A342292, A342293. %K A342289 nonn,more %O A342289 0,3 %A A342289 _N. J. A. Sloane_, Mar 26 2021