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Search: id:A114518
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| 2, 3, 5, 6, 7, 10, 11, 12, 13, 17, 18, 19, 22, 23, 24, 28, 29, 31, 34, 36, 37, 40, 41, 43, 47, 48, 52, 53, 54, 58, 59, 61, 67, 71, 72, 73, 76, 79, 82, 83, 88, 89, 97, 100, 101, 103, 107, 108, 109, 112, 113, 118, 127, 131, 137, 139, 142, 148, 149, 151, 157, 160, 162, 163
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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24 = 2^3 * 3, and 2^3 + 3 = 11, which is prime. So 24 is included.
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MATHEMATICA
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f[n_] := Plus @@ Power @@@ FactorInteger[n]; Select[Range[165], PrimeQ[f[ # ]] &] (*Chandler*)
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PROGRAM
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(PARI) A008475(n)=local(t); if(n<1, 0, t=factor(n); sum(k=1, matsize(t)[1], t[k, 1]^t[k, 2])); for(i=1, 500, if(isprime(A008475(i)), print1(i, ", "))) (Herrgesell)
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CROSSREFS
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Cf. A008475, A114519, A114520, A114522.
Sequence in context: A110086 A107746 A024899 this_sequence A066940 A100118 A028781
Adjacent sequences: A114515 A114516 A114517 this_sequence A114519 A114520 A114521
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KEYWORD
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nonn
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Dec 05 2005
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net) and Lambert Herrgesell (zero815(AT)googlemail.com), Dec 07 2005
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