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Search: id:A054782
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| A054782 |
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Number of primes <= n-th Fibonacci number. |
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+0
2
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| 0, 0, 0, 1, 2, 3, 4, 6, 8, 11, 16, 24, 34, 51, 74, 111, 166, 251, 376, 574, 871, 1329, 2033, 3121, 4794, 7396, 11425, 17688, 27426, 42613, 66317, 103298, 161207, 251757, 393790, 616645, 966507, 1516410, 2381429, 3743010, 5888201, 9269519, 14604028
(list; graph; listen)
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OFFSET
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0,5
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LINKS
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H. J. Smith, Table of n, a(n) for n = 0..70
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MAPLE
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with(combinat): with(numtheory): seq(pi(fibonacci(n)), n = 0 .. 42); [From Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 24 2009]
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PROGRAM
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(Other) sage: [prime_pi(fibonacci(n)) for n in xrange(0, 43)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 06 2009]
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CROSSREFS
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Sequence in context: A066806 A057048 A017911 this_sequence A085113 A129121 A018556
Adjacent sequences: A054779 A054780 A054781 this_sequence A054783 A054784 A054785
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KEYWORD
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nonn
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AUTHOR
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Jeff Burch (gburch(AT)erols.com), May 22 2000
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EXTENSIONS
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More terms from James A. Sellers (sellersj(AT)math.psu.edu), May 23 2000; and N. J. A. Sloane (njas(AT)research.att.com), Nov 07 2000.
Four more terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), Dec 06 2004
Three more terms a(40), a(41), a(42) from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Dec 16 2008
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