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 A028924 #8 May 05 2016 23:28:36 %S A028924 0,1,3,6,12,20,36,63,120,136,168,219,324,453,711,1170,2160,2673,3699, %T A028924 5334,8700,13860,24948,46575,98280,98328,98424,98571,98868,99253, %U A028924 100023,101346,104160 %N A028924 Maximal number of pairs of minimal vectors in n-dimensional laminated lattice. %D A028924 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 174. %Y A028924 A002336 / 2. %K A028924 nonn,hard,more %O A028924 0,3 %A A028924 _N. J. A. Sloane_ and _J. H. Conway_ %E A028924 Entry for n=31 corrected by C. Muses.