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Search: id:A076481
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| A076481 |
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Primes of the form (3^n-1)/2. |
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+0
13
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| 13, 1093, 797161, 3754733257489862401973357979128773, 6957596529882152968992225251835887181478451547013
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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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]
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LINKS
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Christian Salas, Base-3 Repunit Primes and the Cantor Set [From Charles R Greathouse IV Jun 18 2009]
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MATHEMATICA
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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]
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CROSSREFS
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The exponents n are in A028491. Cf. A075081.
Sequence in context: A096084 A095680 A128685 this_sequence A128897 A091781 A156641
Adjacent sequences: A076478 A076479 A076480 this_sequence A076482 A076483 A076484
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KEYWORD
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nonn
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AUTHOR
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Dean Hickerson (dean.hickerson(AT)yahoo.com), Oct 14 2002
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EXTENSIONS
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Reference and note added by [From Charles R Greathouse IV Jun 18 2009]
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