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A195724 Decimal expansion of arctan(sqrt(12)). 1
1, 2, 8, 9, 7, 6, 1, 4, 2, 5, 2, 9, 2, 0, 8, 3, 0, 2, 1, 5, 1, 1, 3, 0, 6, 7, 4, 1, 2, 7, 7, 4, 8, 2, 8, 9, 8, 5, 7, 5, 4, 6, 7, 1, 9, 7, 0, 8, 8, 3, 9, 9, 6, 9, 3, 0, 1, 1, 9, 8, 0, 2, 2, 1, 5, 1, 1, 4, 6, 1, 1, 3, 4, 1, 8, 3, 7, 3, 2, 7, 2, 5, 2, 1, 4, 0, 1, 8, 0, 1, 8, 6, 0, 5, 3, 5, 3, 0, 9, 1 (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

arctan(sqrt(12)) = 1.289761425292083021511306741277...

MATHEMATICA

r = Sqrt[12]; N[ArcTan[r], 100]

RealDigits[%]  (* A195724 *)

RealDigits[ArcTan[2*Sqrt[3]], 10, 100][[1]] (* G. C. Greubel, Aug 20 2018 *)

PROG

(PARI) atan(2*sqrt(3)) \\ G. C. Greubel, Aug 20 2018

(MAGMA) SetDefaultRealField(RealField(100)); Arctan(2*Sqrt(3)); // G. C. Greubel, Aug 20 2018

CROSSREFS

Sequence in context: A199274 A140241 A108744 * A081819 A296850 A021349

Adjacent sequences:  A195721 A195722 A195723 * A195725 A195726 A195727

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)