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 A003788 #35 Jul 08 2025 07:50:45
%S A003788 1,60,60480,987033600,258492255436800,1083930404878024704000,
%T A003788 72736898347485916060188672000,78099458182389588115529148326215680000,
%U A003788 1341733356588640095264385107865053233298800640000
%N A003788 Order of universal Chevalley group A_n (4).
%D A003788 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.
%D A003788 H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.
%H A003788 Geoffrey Critzer, <a href="https://esirc.emporia.edu/handle/123456789/3595">Combinatorics of Vector Spaces over Finite Fields</a>, Master's thesis, Emporia State University, 2018.
%H A003788 <a href="/index/Gre#groups">Index entries for sequences related to groups</a>.
%F A003788 Numbers so far appear to equal A053291(n)/3. - _Ralf Stephan_, Mar 30 2004
%F A003788 a(n) = A(4,n) where A(q,n) is defined in A003787. - _Sean A. Irvine_, Sep 18 2015
%F A003788 a(n) ~ c * 4^(n*(n+2)), where c = (4/3) * A100221 = 0.918050049493... . - _Amiram Eldar_, Jul 07 2025
%t A003788 f[m_, n_] := m^(n (n + 1)/2) Product[m^k - 1, {k, 2, n + 1}];
%t A003788 f[4, #] & /@ Range[0, 8] (* _Michael De Vlieger_, Sep 18 2015 *)
%o A003788 (Magma) [&*[(4^n - 4^k): k in [0..n-1]]/3: n in [1..8]]; // _Vincenzo Librandi_, Sep 19 2015
%Y A003788 Cf. A003787, A003789, A003790, A003791, A003792, A053291, A100221.
%K A003788 nonn,easy
%O A003788 0,2
%A A003788 _N. J. A. Sloane_
%E A003788 One more term from _Sean A. Irvine_, Sep 18 2015