login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A195705 Decimal expansion of arctan(sqrt(3/8)). 3
5, 4, 9, 4, 6, 7, 2, 4, 4, 7, 5, 7, 6, 2, 7, 3, 7, 1, 0, 8, 5, 4, 0, 0, 2, 5, 0, 3, 2, 6, 7, 3, 1, 9, 7, 6, 9, 9, 3, 0, 6, 1, 4, 2, 4, 2, 5, 6, 8, 9, 1, 9, 0, 6, 8, 2, 3, 2, 2, 4, 8, 1, 3, 3, 3, 3, 9, 9, 8, 2, 8, 1, 3, 9, 4, 6, 6, 3, 7, 0, 7, 8, 4, 3, 0, 0, 0, 9, 9, 9, 7, 3, 0, 0, 6, 2, 1, 6, 0, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..5000

EXAMPLE

arctan(sqrt(3/8)) = 0.549467244757...

MATHEMATICA

r = Sqrt[3/8];

N[ArcSin[r], 100]

RealDigits[%]  (* A195700 *)

N[ArcCos[r], 100]

RealDigits[%]  (* A195703 *)

N[ArcTan[r], 100]

RealDigits[%]  (* A195705 *)

N[ArcCos[-r], 100]

RealDigits[%]  (* A195706 *)

PROG

(PARI) atan(sqrt(3/8)) \\ G. C. Greubel, Nov 18 2017

(MAGMA) [Arctan(Sqrt(3/8))]; // G. C. Greubel, Nov 18 2017

CROSSREFS

Cf. A195700.

Sequence in context: A156057 A125057 A021186 * A212878 A092302 A002389

Adjacent sequences:  A195702 A195703 A195704 * A195706 A195707 A195708

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Sep 23 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 1 08:44 EST 2021. Contains 349426 sequences. (Running on oeis4.)