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Search: id:A135724
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| A135724 |
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Fibonacci numbers whose indices are prime Fiboncacci numbers: a(n)=Fibonacci[A001605(n)]. |
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+0
1
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| 1, 2, 5, 233, 1779979416004714189, 2211236406303914545699412969744873993387956988653, 253382418464509732373532537534332147054154157773059562510966346297110975381527
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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The only known prime numbers in this sequence are 2,5,233.
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MATHEMATICA
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a = {}; b = {}; Do[If[PrimeQ[c = Fibonacci[n]], w = Fibonacci[Fibonacci[n]]; AppendTo[a, w]; AppendTo[b, n]], {n, 1, 31}]; a (*Artur Jasinski*)
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CROSSREFS
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Cf. A000045, A135723, A134787, A134788, A134789, A134790.
Sequence in context: A084297 A041873 A072118 this_sequence A137068 A137066 A121270
Adjacent sequences: A135721 A135722 A135723 this_sequence A135725 A135726 A135727
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KEYWORD
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nonn,base
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Nov 26 2007
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