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Search: id:A117745
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| A117745 |
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Prime Fibonacci numbers that are not Chen primes. |
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+0
1
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| 1597, 28657, 433494437, 2971215073, 99194853094755497, 1066340417491710595814572169, 19134702400093278081449423917
(list; graph; listen)
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OFFSET
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0,1
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MAPLE
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ischenprime:=proc(n); if (isprime(n) = 'true') then if (isprime(n+2) = 'true' or numtheory[bigomega](n+2) = 2) then RETURN('true') else RETURN('false') fi fi end: ts_prime_fibonacci_notchen:=proc(n) local i, tren, ans; ans:= [ ]: for i from 0 to n do tren := combinat[fibonacci](i): if (isprime( tren ) = 'true' and ischenprime(tren) = 'false') then ans:=[op(ans), tren]: fi od; return ans end: ts_prime_fibonacci_notchen(300); - Jani Melik (jani_melik(AT)hotmail.com), May 05 2006
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CROSSREFS
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Cf. A005478, A109611.
Sequence in context: A068131 A068263 A078954 this_sequence A084427 A043412 A078853
Adjacent sequences: A117742 A117743 A117744 this_sequence A117746 A117747 A117748
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KEYWORD
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nonn
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AUTHOR
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Jani Melik (jani_melik(AT)hotmail.com), Apr 28 2006
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