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%I #5 Nov 25 2012 13:55:08
%S 0,1,1,3,0,1,1,3,7,5,1,7,1,7,10,3,1,7,1,15,1,7,1,19,0,7,16,7,1,25,1,
%T 19,10,7,15,7,1,7,4,35,1,7,1,39,25,7,1,19,29,25,43,51,1,43,15,35,43,7,
%U 1,55,1,7,43,51,60,25,1,55,43,35,1,43,1,7,25,31,8,49,1,35,16,7,1,7,25,7,43,27
%N (6^n-1)/5 mod n.
%t Table[Mod[(6^n-1)/5,n],{n,90}] (* _Harvey P. Dale_, Nov 25 2012 *)
%K nonn
%O 1,4
%A _N. J. A. Sloane_, Jun 18 2004
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