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 A292111 #8 Sep 30 2017 16:46:08 %S A292111 1,3,25,287,4581,90519,2162901,60249195,1921751145,68980179915, %T A292111 2753007869745,120897239789655 %N A292111 Reflective-symmetric maximal chord diagrams by genus, type II. %H A292111 Evgeniy Krasko, <a href="https://arxiv.org/abs/1709.00796">Counting Unlabelled Chord Diagrams of Maximal Genus</a>, arXiv:1709.00796 [math.CO], 2017. See Table 1, column 3. %Y A292111 The other three sequences in Table 1 are A291172, A275787, A291371. %K A292111 nonn,more %O A292111 1,2 %A A292111 _N. J. A. Sloane_, Sep 20 2017 %E A292111 Name clarified by _Evgeniy Krasko_, Sep 30 2017