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Search: id:A083668
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| A083668 |
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Prime indices of prime index Fibonacci numbers. |
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+0
5
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| 3, 5, 7, 11, 13, 17, 23, 29, 43, 47, 83, 131, 137, 359, 431, 433, 449, 509, 569, 571, 2971, 4723, 5387, 9311, 9677, 14431, 25561, 30757, 35999, 37511, 50833, 81839, 104911, 130021, 148091, 201107, 397379, 433781, 590041, 593689, 604711
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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a(3) = 2: 3 and 2 are primes.
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MATHEMATICA
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Do[ If[ PrimeQ[ Fibonacci[ Prime[n]]], Print[ Prime[n]]], {n, 1, 1000}]
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PROGRAM
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(PARI) pif(n) = { forprime(x=2, n, y = fibonacci(x); if(isprime(y), print1(x" ")) ) }
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CROSSREFS
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Cf. A001605, A075737.
Adjacent sequences: A083665 A083666 A083667 this_sequence A083669 A083670 A083671
Sequence in context: A075794 A135832 A074781 this_sequence A063908 A020628 A108816
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KEYWORD
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nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Jun 14 2003
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EXTENSIONS
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More terms from Zak Seidov (zakseidov(AT)yahoo.com), Aug 31 2006
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