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A125708
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Numbers k such that A115963(k) is prime.
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0
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OFFSET
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1,1
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COMMENTS
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A115963(n) is the numerator of Sum_{k=1..n} 1/prime(k)^3.
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LINKS
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MATHEMATICA
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f=0; Do[p=Prime[n]; f=f+1/p^3; g=Numerator[f]; If[PrimeQ[g], Print[{n, p, g}]], {n, 1, 50}]
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CROSSREFS
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KEYWORD
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hard,more,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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