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A369750
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a(n) = Sum_{p|n, p prime} p^prime(n/p).
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1
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0, 4, 9, 8, 25, 59, 49, 128, 243, 2173, 121, 10379, 169, 131415, 180272, 524288, 289, 9982931, 361, 536949037, 129156970, 2147484979, 529, 138601214939, 48828125, 2199023257749, 94143178827, 8796093845751, 841, 209369086423336, 961, 9007199254740992
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Table[DivisorSum[n, #^Prime[n/#] &, PrimeQ[#] &], {n, 40}]
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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