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 A171118 #17 Aug 28 2022 04:17:26 %S A171118 1,-1,45,-14589,17756793,-58445425017,426876362998821, %T A171118 -6061743911446054965,152244625648721441783409 %N A171118 Three-dimensional Welschinger invariants. %H A171118 Aubin Arroyo, Erwan Brugallé and Lucía López de Medrano, <a href="https://doi.org/10.1093/imrn/rnq096">Recursive formulas for Welschinger invariants of the projective plane</a>, International Mathematics Research Notices, 2011, 1107-1134; arXiv:<a href="https://arxiv.org/abs/0809.1541">0809.1541</a> [math.AG], 2008-2010. See numbers W3(d) in Section 7.3. %H A171118 Erwan Brugallé and Penka Georgieva, <a href="https://doi.org/10.1007/s00208-016-1398-x">Pencils of quadrics and Gromov-Witten-Welschinger invariants of CP^3</a>, Mathematische Annalen 365, 363-380 (2016); arXiv:<a href="https://arxiv.org/abs/1508.02560">1508.02560</a> [math.AG], 2015-2016. %H A171118 Erwan Brugallé and Grigory Mikhalkin, <a href="https://doi.org/10.1016/j.crma.2007.07.026">Enumeration of curves via floor diagrams</a>, C. R. Acad. Sci. Paris, Ser. I, 345 (2007), 329-334; arXiv:<a href="https://arxiv.org/abs/0706.0083">0706.0083</a> [math.AG], 2007. %Y A171118 Cf. A319851. %K A171118 sign,more %O A171118 0,3 %A A171118 _N. J. A. Sloane_, Sep 27 2010 %E A171118 a(4)-a(6) from Arroyo et al. added by _Andrey Zabolotskiy_, May 03 2022 %E A171118 a(7)-a(8) from Brugallé & Georgieva added by _Andrey Zabolotskiy_, Aug 27 2022