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 A004017 M5009 #23 Oct 14 2024 12:22:44 %S A004017 16,128,448,1024,2016,3584,5504,8192,12112,16128,21312,28672,35168, %T A004017 44032,56448,65536,78624,96896,109760,129024,154112,170496,194688, %U A004017 229376,252016,281344,327040,352256,390240,451584,476672,524288,596736,628992 %N A004017 Theta series of E_8 lattice with respect to deep hole. %D A004017 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 122. %D A004017 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A004017 Fern Gossow, <a href="https://arxiv.org/abs/2410.05678">Lyndon-like cyclic sieving and Gauss congruence</a>, arXiv:2410.05678 [math.CO], 2024. See p. 26. %H A004017 G. Nebe and N. J. A. Sloane, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/E8.html">Home page for this lattice</a> %t A004017 QP = QPochhammer; s = QP[-1, q]^16 QP[q]^8 / 2^12 + O[q]^34; CoefficientList[s, q] (* _Jean-François Alcover_, Jul 04 2017 *) %Y A004017 Equals 16 * A007331(n). %K A004017 nonn,easy %O A004017 1,1 %A A004017 _N. J. A. Sloane_ %E A004017 a(8) corrected and more terms from _Sean A. Irvine_, Oct 18 2015