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A195731 Decimal expansion of arcsec(4). 2
1, 3, 1, 8, 1, 1, 6, 0, 7, 1, 6, 5, 2, 8, 1, 7, 9, 6, 5, 7, 4, 5, 6, 6, 4, 2, 5, 4, 6, 4, 6, 0, 4, 0, 4, 6, 9, 8, 4, 6, 3, 9, 0, 9, 6, 6, 5, 9, 0, 7, 1, 4, 7, 1, 6, 8, 5, 3, 5, 4, 8, 5, 1, 7, 4, 1, 3, 3, 3, 3, 1, 4, 2, 6, 6, 2, 0, 8, 3, 2, 7, 6, 9, 0, 2, 2, 6, 8, 6, 7, 0, 4, 4, 3, 0, 4, 3, 9, 3, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

EXAMPLE

arcsec(4) = 1.318116071652817965...

MATHEMATICA

r=4;

N[ArcSec[r], 100]

RealDigits[%]

PROG

(PARI) acos(1/4) \\ G. C. Greubel, Aug 20 2018

(MAGMA) SetDefaultRealField(RealField(100)); Arccos(1/4); // G. C. Greubel, Aug 20 2018

CROSSREFS

Cf. A195628.

Sequence in context: A141252 A276168 A165498 * A154294 A059526 A091839

Adjacent sequences:  A195728 A195729 A195730 * A195732 A195733 A195734

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

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Last modified June 15 20:50 EDT 2019. Contains 324145 sequences. (Running on oeis4.)