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 A133682 #7 Jan 28 2023 12:19:50 %S A133682 1,22,8,7,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, %T A133682 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, %U A133682 3,3 %N A133682 Number of regular complex polytopes in n-dimensional unitary complex space. %C A133682 In each dimension there are infinite families which we count as a single polytope: the generalized complex n-cube with generalized Schlaefli symbol m(4)2(3)2...2(3)2 with m^n vertices and its dual, the generalized complex n-cross-polytope. %D A133682 H. S. M. Coxeter, Regular complex polytopes, Cambridge University Press, 1974. %D A133682 E. Schulte, Symmetry of Polytopes and Polyhedra, in J. E. Goodman and J. O'Rourke, Handbook of discrete and computational geometry, 2nd edition, Chapman & Hall / CRC, 2004. %H A133682 G. C. Shephard, <a href="https://doi.org/10.1112/plms/s3-2.1.82">Regular complex polytopes</a>, Proc. Lond. Math. Soc. (3), Vol. 2 (1952), pp. 82-97. %e A133682 a(3) = 8 because in C^3 the regular complex polytopes correspond to the following generalized Schlaefli symbols: m(4)2(3)2 (generalized complex cube), 2(3)2(4)m (generalized complex octahedron), 2(6)2(6)2 (tetrahedron), 2(6)2(10)2 (icosahedron), 2(10)2(6)2 (dodecahedron), 3(3)3(3)3, 3(3)3(4)2, 2(4)2(3)3. %Y A133682 Cf. A060296. %K A133682 nonn %O A133682 1,2 %A A133682 _Brian Hopkins_, Jan 03 2008