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Search: id:A131563
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| A131563 |
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Decimal expansion of e*Pi*phi, where phi=(5^(1/2) + 1)/2. |
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+0
11
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| 1, 3, 8, 1, 7, 5, 8, 0, 2, 2, 7, 1, 7, 6, 4, 9, 4, 4, 3, 9, 7, 3, 6, 7, 5, 6, 2, 0, 1, 2, 0, 7, 5, 9, 5, 6, 5, 9, 2, 1, 9, 2, 1, 2, 5, 4, 2, 5, 1, 5, 3, 6, 4, 2, 1, 6, 8, 9, 5, 0, 8, 4, 6, 5, 8, 2, 0, 9, 0, 9, 0, 8, 4, 6, 6, 9, 4, 1, 5, 8, 6, 4, 7, 5, 3, 7, 9, 9, 7, 2, 2, 3, 2, 5, 3, 6, 1, 8, 4
(list; cons; graph; listen)
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OFFSET
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2,2
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COMMENT
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Also we can write phi=(1+sqrt(5))/2.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=2,...,20000
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EXAMPLE
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e*Pi*phi=13.817580227...
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MAPLE
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exp(1)*Pi*(1+sqrt(5))/2;
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MATHEMATICA
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phi=(5^(1/2)+1)/2; RealDigits[N[Pi*E*phi, 6! ]][[1]] [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 18 2009]
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PROGRAM
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(PARI) { default(realprecision, 20080); phi = (1 + sqrt(5))/2; x=exp(1)*Pi*phi/10; for (n=2, 20000, d=floor(x); x=(x-d)*10; write("b131563.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Apr 26 2009]
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CROSSREFS
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Cf. Decimal expansion of e: A001113. Decimal expansion of Pi: A000796. Decimal expansion of phi: A001622. e*Pi: A019609. Pi*phi: A094886. e*phi: A094885.
Sequence in context: A021266 A054399 A013676 this_sequence A016622 A143623 A094874
Adjacent sequences: A131560 A131561 A131562 this_sequence A131564 A131565 A131566
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KEYWORD
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cons,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Aug 27 2007, Dec 17 2008
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EXTENSIONS
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More terms from N. J. A. Sloane (njas(AT)research.att.com), Dec 19 2008
Fixed my PARI program, had -n Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 19 2009
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