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%I #7 Dec 01 2018 12:40:53
%S 3,19,101,409,1531,5507,19273,65677,220859,733559,2412763,7867543,
%T 25485179,82064011,262960069,839001707,2666790157,8448283721,
%U 26684834629,84064182049,264194301341,828513359543,2593131866471,8101615860581,25270000074743
%N Prime(3^n - 1).
%t Prime[3^Range[25]-1] (* _Harvey P. Dale_, Dec 01 2018 *)
%o (PARI) f(n) = for(x=1,n,print1(prime(3^x-1)","))
%K nonn
%O 1,1
%A _Cino Hilliard_, Jun 19 2004
%E More terms from _Harvey P. Dale_, Dec 01 2018
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