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 A022056 #12 Oct 16 2018 12:00:25 %S A022056 1,1200,202450,11389600,285385200,3779134240,30885301600,181284196800, %T A022056 842726826450,3262594952400,10968671291040,32802221530400, %U A022056 89267475949600,223991253535200,525491835433600,1161295395893440,2440508069871600,4898380398568000,9456583413620850,17601674014456800 %N A022056 Theta series of D_25 lattice. %D A022056 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 118. %H A022056 Seiichi Manyama, <a href="/A022056/b022056.txt">Table of n, a(n) for n = 0..1000</a> %t A022056 terms = 15; f[q_] = LatticeData["D25", "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 A022056 nonn %O A022056 0,2 %A A022056 _N. J. A. Sloane_ %E A022056 More terms from _Seiichi Manyama_, Oct 16 2018