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A089287
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Sum of all prime factors of floor(Pi*10^n), Pi=3.14....
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3
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3, 31, 159, 355, 169, 314159, 392705, 10166, 7998, 9787003, 28954814, 157079632681, 68250087, 4349287, 67757089, 1002742628275, 1230791, 1307585156, 14846149, 1296188, 1024025943, 452477425, 1492388104
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OFFSET
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0,1
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COMMENTS
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LINKS
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EXAMPLE
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n=6: floor(Pi*10^6)=3141592=2*2*2*392699: a(6)=2+2+2+392699=392705.
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MATHEMATICA
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sapf[n_]:=Total[Flatten[Table[#[[1]], #[[2]]]&/@FactorInteger[n]]]; sapf/@ Floor[Pi 10^Range[0, 30]] (* Harvey P. Dale, Nov 18 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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STATUS
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approved
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