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Search: id:A002581
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| A002581 |
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Decimal expansion of cube root of 3.
(Formerly M3220 N1304)
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+0
2
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| 1, 4, 4, 2, 2, 4, 9, 5, 7, 0, 3, 0, 7, 4, 0, 8, 3, 8, 2, 3, 2, 1, 6, 3, 8, 3, 1, 0, 7, 8, 0, 1, 0, 9, 5, 8, 8, 3, 9, 1, 8, 6, 9, 2, 5, 3, 4, 9, 9, 3, 5, 0, 5, 7, 7, 5, 4, 6, 4, 1, 6, 1, 9, 4, 5, 4, 1, 6, 8, 7, 5, 9, 6, 8, 2, 9, 9, 9, 7, 3, 3, 9, 8, 5, 4, 7, 5, 5, 4, 7, 9, 7, 0, 5, 6, 4, 5, 2, 5, 6, 6, 8, 6, 8, 3, 5, 0, 8
(list; cons; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Uhler, Horace S.; Many-figure approximations for $\root 3\of 2$, $\root 3\of 3$, $\root 3\of 4$ and $\root 3\of 9$ with $\chi\sp 2$ data. Scripta Math. 18, (1952). 173-176.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,20000
S. Plouffe, The cube root of 3 to 2000 places
S. Plouffe, Plouffe's Inverter, The cube root of 3 to 2000 places
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EXAMPLE
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1.442249570307408382321638310780109588391869253499350577546416...
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PROGRAM
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(PARI) { default(realprecision, 20080); x=3^(1/3); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b002581.txt", n, " ", d)); } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 07 2009]
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CROSSREFS
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Cf. A002946 = Continued fraction. [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 07 2009]
Sequence in context: A162232 A029676 A105190 this_sequence A161778 A099655 A146899
Adjacent sequences: A002578 A002579 A002580 this_sequence A002582 A002583 A002584
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KEYWORD
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nonn,cons
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Fixed my PARI program, had -n Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 19 2009
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