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Search: id:A136134
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A136134 Primes in A136133 (integer log of harmonic numbers sequence). +0
1
3, 5, 743, 59, 312408461, 13669, 10920223, 85691034670497287, 795398356293665458781, 14301636907, 4280339305565030602944575375011 (list; graph; listen)
OFFSET

0,1

MATHEMATICA

sopfr = Function[x, Plus @@ Map[Times @@ # &, FactorInteger[x]]]; Select[sopfr /@ HarmonicNumber[Range[100]], PrimeQ]

CROSSREFS

Cf. A136133, A136121, A136122, A001008, A002805.

Adjacent sequences: A136131 A136132 A136133 this_sequence A136135 A136136 A136137

Sequence in context: A087670 A138584 A002427 this_sequence A119497 A012783 A062655

KEYWORD

nonn

AUTHOR

Carlos Alves (cjsalves(AT)gmail.com), Dec 16 2007

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Last modified January 7 17:35 EST 2009. Contains 152824 sequences.


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