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%I
%S 0,0,42,3780,416640,128429280,131087359872,431733366005760,
%T 2759627217251143680,52225408447192175247360,
%U 3239317984850132995556769792,621439868357209928957479448739840
%N Number of elements of order 4 in GL(n,2).
%C a(n)=A053718(n)-A053722(n)
%D V. Jovovic, The cycle index polynomials of some classical groups, Belgrade, 1995, unpublished.
%K nonn,changed
%O 1,3
%A _Vladeta Jovovic_, Mar 30 2000
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