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 A003808 Order of simple Chevalley group A_3(q) (or D_3(q)), q = prime power. 1
 20160, 6065280, 987033600, 7254000000, 2317591180800, 34558531338240, 50759843097600, 2069665112592000, 12714519233969280, 1148120010326016000, 712975930219192320, 7568375355962524800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 REFERENCES J. H. Conway, R. T. Curtis, S. P. Norton, R. A. Parker and R. A. Wilson, ATLAS of Finite Groups. Oxford Univ. Press, 1985, p. xvi. H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131. LINKS FORMULA a(n) = a(A000961(n+1),3) where a(q,n) is defined in A003793. - Sean A. Irvine, Sep 18 2015 MATHEMATICA 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[#, 3] & /@ Select[Range[2, 20], PrimePowerQ] (* Michael De Vlieger, Sep 18 2015 *) CROSSREFS Sequence in context: A145535 A190474 A109479 * A011786 A003801 A305186 Adjacent sequences:  A003805 A003806 A003807 * A003809 A003810 A003811 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified May 16 21:28 EDT 2021. Contains 343951 sequences. (Running on oeis4.)