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 A342290 #7 Mar 26 2021 20:25:59 %S A342290 0,1,2,6,22,92,421,2051,10449,55023,297139 %N A342290 Number of 4-row-restricted Baxter slicings of size n. %H A342290 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. 27. %Y A342290 Cf. A001181, A342289, A342291, A342292, A342293. %K A342290 nonn,more %O A342290 0,3 %A A342290 _N. J. A. Sloane_, Mar 26 2021