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A005480
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Decimal expansion of cube root of 4.
(Formerly M3771)
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4
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1, 5, 8, 7, 4, 0, 1, 0, 5, 1, 9, 6, 8, 1, 9, 9, 4, 7, 4, 7, 5, 1, 7, 0, 5, 6, 3, 9, 2, 7, 2, 3, 0, 8, 2, 6, 0, 3, 9, 1, 4, 9, 3, 3, 2, 7, 8, 9, 9, 8, 5, 3, 0, 0, 9, 8, 0, 8, 2, 8, 5, 7, 6, 1, 8, 2, 5, 2, 1, 6, 5, 0, 5, 6, 2, 4, 2, 1, 9, 1, 7, 3, 2, 7, 3, 5, 4, 4, 2, 1, 3, 2, 6, 2, 2, 2, 0, 9, 5, 7, 0, 2, 2, 9, 3, 4, 7, 6
(list; constant; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Let h=4^(1/3). Then (h+1,0) is the x-intercept of the shortest segment from the x-axis through (1,2) to the y-axis; see A197008. [From Clark Kimberling, Oct 10 2011]
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REFERENCES
| N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Horace S. Uhler, Many-figure approximations for cubed root of 2, cubed root of 3, cubed root of 4, and cubed root of 9 with chi2 data, Scripta Math. 18, (1952), p. 173-176.
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,20000
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EXAMPLE
| 1.587401051968199474751705639272308260391493327899853...
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MATHEMATICA
| RealDigits[N[4^(1/3), 200]] (* From Vladimir Orlovsky (4vladimir(AT)gmail.com), May 27 2010 *)
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PROG
| (PARI) { default(realprecision, 20080); x=4^(1/3); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b005480.txt", n, " ", d)); } \\ From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 07 2009, with a correction made May 19 2009
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CROSSREFS
| Cf. A002947 = Continued fraction. [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 07 2009]
Sequence in context: A133731 A021067 A047914 * A204921 A021867 A165909
Adjacent sequences: A005477 A005478 A005479 * A005481 A005482 A005483
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KEYWORD
| nonn,cons
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com). Entry revised Apr 23 2006
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