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Search: id:A064720
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| A064720 |
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A Beatty sequence for 3^i + 3^-i +1. |
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+0
3
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| 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 128, 130, 132, 134
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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3^i + 3^-i + 1 ~= 1.90966484565321951005513028719008497... ~= 21/11.
Different from A059548, although the sequences agree for about 1400 terms. - Joshua Zucker, Apr 25 2007
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,2000
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MATHEMATICA
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a = Chop[ N[ 3^I + 3^-I +1, 36], 10^-40]; Table[ Floor[n*a/(a-1))], {n, 1, 75} ]
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PROGRAM
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(PARI) { default(realprecision, 100); b=real(3^I + 3^-I) + 1; b=b/(b - 1); for (n = 1, 2000, write("b064720.txt", n, " ", floor(n*b)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 23 2009]
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CROSSREFS
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Cf. A064719.
Sequence in context: A137804 A054965 A059548 this_sequence A029741 A085125 A134930
Adjacent sequences: A064717 A064718 A064719 this_sequence A064721 A064722 A064723
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KEYWORD
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easy,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 13 2001
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