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 A008871 #12 Jul 08 2025 01:21:34 %S A008871 214841575522005575270400,14515406695082926420056516790429286400, %T A008871 85528710781342640103833619055142765466746880000, %U A008871 3175144122737732284276405334472656250000000000000000000 %N A008871 Order of universal Chevalley group E_6 (q), q = prime power. %D A008871 H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131. %D A008871 J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985 [for best online version see https://oeis.org/wiki/Welcome#Links_to_Other_Sites], p. xvi. %p A008871 q^36*(q^2-1)*(q^5-1)*(q^6-1)*(q^8-1)*(q^9-1)*(q^12-1); %Y A008871 Cf. A178780. %K A008871 nonn %O A008871 1,1 %A A008871 _N. J. A. Sloane_