Search: id:A008868
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%I A008868
%S A008868 337804753143634806261388190614085595079991692242467651576160959909068800000,
%T A008868 1883005291295393231109903243997266033214088678494015203852244939182661658015010987871124394998216369444862642\
               0940800000,
%U A008868 1917972921426717177546397578975129064213575076042165575335582875982369771541278709844847703453403482984096973\
               95609822849492217656441474908160000000000
%N A008868 Order of simple Chevalley group E_8 (q), q = prime power.
%C A008868 Coxeter and Moser p. 131 remark that the first term in this sequence 
               is comparable to Eddington's estimate of the number of protons in 
               the universe.
%D A008868 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.
%D A008868 H. S. M. Coxeter and W. O. J. Moser, Generators and Relations for Discrete 
               Groups, 4th ed., Springer-Verlag, NY, reprinted 1984, p. 131.
%p A008868 q^120*(q^2-1)*(q^8-1)*(q^12-1)*(q^14-1)*(q^18-1)*(q^20-1)*(q^24-1)*(q^30-1);
%Y A008868 Cf. A004231.
%Y A008868 Sequence in context: A095538 A095540 A095542 this_sequence A095544 A095546 
               A095548
%Y A008868 Adjacent sequences: A008865 A008866 A008867 this_sequence A008869 A008870 
               A008871
%K A008868 nonn,easy,nice,bref
%O A008868 2,1
%A A008868 N. J. A. Sloane (njas(AT)research.att.com).
%E A008868 a(4) added by N. J. A. Sloane (njas(AT)research.att.com), Sep 16 2008

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