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A195719 Decimal expansion of arccos(-(1/2)^(2/3)). 3
2, 2, 5, 2, 2, 9, 8, 7, 0, 8, 4, 7, 6, 3, 1, 0, 1, 6, 0, 1, 8, 7, 1, 8, 5, 1, 2, 3, 7, 9, 8, 6, 4, 6, 5, 0, 2, 6, 5, 7, 9, 5, 8, 9, 4, 6, 9, 0, 5, 8, 9, 0, 5, 4, 7, 5, 1, 0, 1, 9, 4, 5, 5, 0, 2, 8, 5, 9, 8, 5, 4, 8, 6, 1, 6, 2, 8, 1, 8, 6, 3, 5, 0, 0, 8, 3, 7, 7, 2, 1, 0, 1, 6, 6, 1, 4, 9, 1, 7, 6 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..10000

EXAMPLE

arccos(-(1/2)^(2/3)) = 2.252298708476310160...

MATHEMATICA

r = (1/2)^(2/3);

N[ArcCos[-r], 100]

RealDigits[%]

PROG

(PARI) acos(-(1/2)^(2/3)) \\ G. C. Greubel, Aug 20 2018

(MAGMA) SetDefaultRealField(RealField(100)); Arccos(-(1/2)^(2/3)); // G. C. Greubel, Aug 20 2018

CROSSREFS

Cf. A195716.

Sequence in context: A242277 A241476 A309727 * A108053 A327969 A328324

Adjacent sequences:  A195716 A195717 A195718 * A195720 A195721 A195722

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

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Last modified September 30 12:21 EDT 2020. Contains 337439 sequences. (Running on oeis4.)