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A031963 a(n) = number of elements of order n in simple group L_2(7) of order 168. 9

%I

%S 1,21,56,42,0,0,48

%N a(n) = number of elements of order n in simple group L_2(7) of order 168.

%D H. Ferguson and C. Ferguson, Eightfold way: the sculpture, pp. 133-173 in S. Levy, ed., The Eightfold Way, Cambridge, 1999. (Beware errors!)

%H <a href="/index/Gre#groups">Index entries for sequences related to groups</a>

%o (MAGMA) t1:=[0 : n in [1..7]]; G:=PSL(2,7); for g in G do t1[Order(g)]:=t1[Order(g)]+1; end for; t1; (see A145437 for a much better program!)

%K nonn,fini,full

%O 1,2

%A _N. J. A. Sloane_, Apr 06 2009

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Last modified February 16 21:37 EST 2020. Contains 331975 sequences. (Running on oeis4.)