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 A331141 #13 Jan 25 2022 09:27:58 %S A331141 1,5,10,20,30,50,50,80,90,150,144,200,170,250,300,320,290,450,400,600, %T A331141 500,720,530,800,750,850,810,1000,900,1500,1024,1280,1440,1450,1500, %U A331141 1800,1370,2000,1700,2400,1764,2500,1850,2880,2700,2650,2210,3200,2450 %N A331141 Number of symmetrically inequivalent coincidence rotations of index n in lattice A_4. %C A331141 The overall number of coincidence rotations is 120 times higher. Some symmetrically distinct rotations generate the same coincidence site lattices, hence a(n) >= A331142(n). - _Andrey Zabolotskiy_, Jan 29 2020 %H A331141 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 A331141 <a href="/index/Aa#A4">Index entries for sequences related to A_4 lattice</a> %Y A331141 Cf. A031360, A031361, A331139, A331140, A331142. %K A331141 nonn,mult %O A331141 1,2 %A A331141 _N. J. A. Sloane_, Jan 12 2020 %E A331141 Name corrected and terms a(12) and beyond added by _Andrey Zabolotskiy_, Jan 29 2020