Search: id:A076481
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%I A076481
%S A076481 13,1093,797161,3754733257489862401973357979128773,
%T A076481 6957596529882152968992225251835887181478451547013
%N A076481 Primes of the form (3^n-1)/2.
%C A076481 Members of this sequence are precisely those primes whose reciprocals 
               are in the Cantor set; see the Salas reference. [From Charles R Greathouse 
               IV Jun 18 2009]
%H A076481 Christian Salas, <a href="http://arxiv.org/abs/0906.0465">Base-3 Repunit 
               Primes and the Cantor Set</a> [From Charles R Greathouse IV Jun 18 
               2009]
%t A076481 lst={};Do[p=(3^n-1)/2;If[PrimeQ[p],AppendTo[lst,p]],{n,0,3*5!}];lst [From 
               Vladimir Orlovsky (4vladimir(AT)gmail.com), Jan 27 2009]
%Y A076481 The exponents n are in A028491. Cf. A075081.
%Y A076481 Sequence in context: A096084 A095680 A128685 this_sequence A128897 A091781 
               A156641
%Y A076481 Adjacent sequences: A076478 A076479 A076480 this_sequence A076482 A076483 
               A076484
%K A076481 nonn
%O A076481 1,1
%A A076481 Dean Hickerson (dean.hickerson(AT)yahoo.com), Oct 14 2002
%E A076481 Reference and note added by [From Charles R Greathouse IV Jun 18 2009]

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