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 A022046 #12 Oct 16 2018 08:37:45 %S A022046 1,420,21870,331240,2128260,8972712,29822520,80027280,193511790, %T A022046 409172940,825736296,1509537960,2698852520,4472616120,7347537600, %U A022046 11335886864,17520853380,25553816400,37658603350,52706867640,74655559272,100969845200,138840872040,182317633680 %N A022046 Theta series of D_15 lattice. %D A022046 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 118. %H A022046 Seiichi Manyama, <a href="/A022046/b022046.txt">Table of n, a(n) for n = 0..10000</a> %t A022046 terms = 20; f[q_] = LatticeData["D15", "ThetaSeriesFunction"][-I*Log[q]/Pi]; s = f[q] + O[q]^(2 terms); DeleteCases[CoefficientList[s, q], 0][[1 ;; terms]] (* _Jean-François Alcover_, Jul 06 2017 *) %K A022046 nonn %O A022046 0,2 %A A022046 _N. J. A. Sloane_ %E A022046 More terms from _Seiichi Manyama_, Oct 16 2018