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 A003810 #19 Jun 14 2024 22:31:08
%S A003810 20158709760,21032402889738240,361310134959341568000,
%T A003810 1383059427750000000000000,61637759336805268655956377600,
%U A003810 39841906041871272087686291128320,1234219157861100568481165377536000,1392357762553459444742198951136000000,161092184393918097496815608751014338560
%N A003810 Order of simple Chevalley group A_5(q), q = prime power.
%D A003810 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 A003810 H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.
%F A003810 a(n) = a(A000961(n+1),5) where a(q,n) is defined in A003793. - _Sean A. Irvine_, Sep 18 2015
%t A003810 f[m_, n_] := Block[{g, x, y}, g[x_, y_] := x^(y (y + 1)/2) Product[x^k - 1, {k, 2, y + 1}]; g[m, n]/GCD[n + 1, m - 1]]; f[#, 5] & /@ Select[Range[2, 13], PrimePowerQ] (* _Michael De Vlieger_, Sep 18 2015 *)
%K A003810 nonn,easy
%O A003810 1,1
%A A003810 _N. J. A. Sloane_
%E A003810 a(8)-a(9) from _Michael De Vlieger_, Sep 18 2015