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A289723
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Primes of the form 3^k - 20.
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1
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7, 61, 223, 709, 59029, 177127, 1162261447, 3486784381, 94143178807, 847288609423, 2541865828309, 7509466514979724803946715958257527, 147808829414345923316083210206383297581, 26183890704263137277674192438430182020124327
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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Select[Table[3^k - 20], {k, 3, 100}], PrimeQ[#] &]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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