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A124299
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Largest prime < 10*a[n-1], a[1]=17.
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1
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17, 167, 1669, 16673, 166723, 1667227, 16672267, 166722667, 1667226667, 16672266659, 166722666527, 1667226665213, 16672266652081, 166722666520801, 1667226665207989, 16672266652079879, 166722666520798747
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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NestList[NextPrime[10#, -1]&, 17, 20] (* Harvey P. Dale, Sep 05 2013 *)
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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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