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Search: id:A079613
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| A079613 |
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F(3*2^n) where F(k) denotes the k-th Fibonacci number. |
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+0
2
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| 2, 8, 144, 46368, 4807526976, 51680708854858323072, 5972304273877744135569338397692020533504, 79757008057644623350300078764807923712509139103039448418553259155159833079730688
(list; graph; listen)
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OFFSET
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0,1
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REFERENCES
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R. L. Graham, D. E. Knuth and O. Patashnick, "Concrete mathematics", second edition, Addison Wesley, ex.6.61
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FORMULA
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sum(n>=0, 1/a(n)) =5/4-1/tau = 0.6319660112... since sum(k=0, n, 1/a(k))=5/4-F(3*2^n-1)/F(3*2^n)
a(n) = A081976(n+1)*A081976(n+2). - Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 03 2003
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CROSSREFS
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Cf. A058635.
Sequence in context: A140050 A009817 A124105 this_sequence A091299 A007314 A102099
Adjacent sequences: A079610 A079611 A079612 this_sequence A079614 A079615 A079616
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KEYWORD
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nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 29 2003
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