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A135969 Sum of the prime factors of A135953(n). 2
150, 2974, 62158, 55946694, 2710261050, 555008010, 46165377746, 95396546, 92180471494910, 1665088321801550, 771601497990, 8242065051309594, 32530503217194, 272602401466814027806, 5568053048227732238014 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
A subsequence of A135968.
LINKS
FORMULA
a(n)=A008472(A135953(n)). - R. J. Mathar, Nov 26 2008
EXAMPLE
a(1)=150=37+113 because A135953(1)=4181=37*113.
a(2)=2974=557+2417 because A135953(2)=1346269=557*2417.
MATHEMATICA
k = {}; Do[If[ ! PrimeQ[Fibonacci[Prime[n]]], b = FactorInteger[Fibonacci[Prime[n]]]; c = Length[FactorInteger[b]]; If[c == 2, d = b[[1]][[1]] + b[[2]][[1]]; AppendTo[k, d]]], {n, 1, 50}]; k
Total[Transpose[FactorInteger[#]][[1]]]&/@Select[Fibonacci[Prime[ Range[50]]], PrimeOmega[#]==2&] (* Harvey P. Dale, Feb 18 2012 *)
CROSSREFS
Sequence in context: A206041 A151607 A135968 * A128963 A293097 A185406
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 09 2007
EXTENSIONS
Definition clarified. Equivalent formula added. - R. J. Mathar, Nov 26 2008
STATUS
approved

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Last modified March 18 22:09 EDT 2024. Contains 370951 sequences. (Running on oeis4.)