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 A028923 #12 Mar 25 2022 13:03:37 %S A028923 0,2,6,12,24,40,72,92,132,180,276,432,756,918,1232,1746,3290,4266 %N A028923 Kissing number of n-dimensional lattice Kappa_n. %D A028923 J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 161. %H A028923 G. Nebe and N. J. A. Sloane, <a href="http://www.math.rwth-aachen.de/~Gabriele.Nebe/LATTICES/kiss.html">Table of highest kissing numbers known</a> %F A028923 a(n) >= A001116(n). - _Charles R Greathouse IV_, Mar 25 2022 %Y A028923 Cf. A001116, A002336, A257479. %K A028923 nonn,nice %O A028923 0,2 %A A028923 _N. J. A. Sloane_