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A136134 Primes in A136133 (integer log of harmonic numbers sequence). 0
3, 5, 743, 59, 312408461, 13669, 10920223, 85691034670497287, 795398356293665458781, 14301636907, 4280339305565030602944575375011 (list; graph; refs; listen; history; internal format)
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.

Sequence in context: A087670 A138584 A002427 * A119497 A012783 A062655

Adjacent sequences:  A136131 A136132 A136133 * A136135 A136136 A136137

KEYWORD

nonn

AUTHOR

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

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.