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 A331142 #13 Jan 25 2022 09:27:54 %S A331142 1,5,10,20,6,50,50,80,90,30,144,200,170,250,60,320,290,450,400,120, %T A331142 500,720,530,800,150,850,810,1000,900,300,1024,1280,1440,1450,300, %U A331142 1800,1370,2000,1700,480,1764,2500,1850,2880,540,2650,2210,3200,2450,750,2900 %N A331142 Number of different coincidence site lattices of index n in lattice A_4. %H A331142 Michael Baake and Peter Zeiner, <a href="https://doi.org/10.1080/14786430701846206">Coincidences in 4 dimensions</a>, Phil. Mag. 88 (2008), 2025-2032; arXiv:<a href="https://arxiv.org/abs/0712.0363">0712.0363</a> [math.MG]. See end of Section 3. %H A331142 Manuela Heuer and Peter Zeiner, <a href="https://doi.org/10.1088/1742-6596/226/1/012024">CSLs of the root lattice A_4</a>, J. Phys.: Conf. Ser. 226 (2010), 012024; arXiv:<a href="https://arxiv.org/abs/1301.2001">1301.2001</a> [math.MG]. %H A331142 <a href="/index/Aa#A4">Index entries for sequences related to A_4 lattice</a> %Y A331142 Cf. A031360, A031361, A331139, A331140, A331141. %K A331142 nonn,mult %O A331142 1,2 %A A331142 _N. J. A. Sloane_, Jan 12 2020 %E A331142 Name corrected and terms a(12) and beyond added by _Andrey Zabolotskiy_, Jan 29 2020