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A206098
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Fibonacci numbers F with 3 distinct prime divisors, and F+3 or F-3 also with 3 distinct prime divisors.
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0
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9227465, 7778742049, 17167680177565, 1500520536206896083277, 3311648143516982017180081, 50095301248058391139327916261, 898923707008479989274290850145, 23770696554372451866815101694984845480039225387896643963981
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listen;
history;
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internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..8.
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EXAMPLE
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9227465=5*13*141961; (9227465+2)=37*113*2207.
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MATHEMATICA
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Select[Fibonacci[Range[300]], Last/@FactorInteger[#]=={1, 1, 1} && (Last/@FactorInteger[#+3]=={1, 1, 1} || Last/@FactorInteger[#-3]=={1, 1, 1})&]
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CROSSREFS
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Cf. A000045
Sequence in context: A187675 A205615 A206599 * A105175 A212469 A234395
Adjacent sequences: A206095 A206096 A206097 * A206099 A206100 A206101
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KEYWORD
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nonn
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AUTHOR
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Vladimir Joseph Stephan Orlovsky, Feb 03 2012
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STATUS
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approved
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