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A088553
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Primes of the form (3^x-1)/2 or (3^x+1)/2.
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3
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2, 5, 13, 41, 1093, 797161, 21523361, 926510094425921, 1716841910146256242328924544641, 3754733257489862401973357979128773, 6957596529882152968992225251835887181478451547013
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OFFSET
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1,1
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COMMENTS
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The next term is too large to include.
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LINKS
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MATHEMATICA
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Select[Flatten[Table[(3^x+{1, -1})/2, {x, 150}]], PrimeQ] (* Harvey P. Dale, Dec 04 2018 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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