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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; text; internal format)
OFFSET
0,1
LINKS
MATHEMATICA
sopfr = Function[x, Plus @@ Map[Times @@ # &, FactorInteger[x]]]; Select[sopfr /@ HarmonicNumber[Range[100]], PrimeQ]
CROSSREFS
Sequence in context: A320939 A002427 A350036 * A119497 A298094 A012783
KEYWORD
nonn
AUTHOR
Carlos Alves, Dec 16 2007
STATUS
approved

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Last modified July 21 12:49 EDT 2024. Contains 374474 sequences. (Running on oeis4.)