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A089286
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Sum of distinct prime factors of floor(Pi*10^n), Pi=3.14....
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3
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3, 31, 159, 352, 169, 314159, 392701, 10166, 7995, 9787003, 28954814, 157079632681, 68250087, 4349287, 67757089, 1002742628275, 1230782, 1307585156, 14846149, 1296180, 1024025943, 452477425, 1492388104
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OFFSET
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0,1
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LINKS
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FORMULA
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EXAMPLE
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n=6: floor(Pi*10^6) = 3141592 = 2*2*2*392699: a(6) = 2 + 392699 = 392701.
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MATHEMATICA
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Table[Total[FactorInteger[Floor[Pi 10^n]][[;; , 1]]], {n, 0, 30}] (* Harvey P. Dale, Sep 02 2023 *)
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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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