A195714 Decimal expansion of arctan((1/2)^(1/3)).

6, 7, 0, 8, 8, 7, 9, 7, 8, 7, 1, 2, 5, 1, 5, 2, 2, 9, 6, 5, 7, 6, 0, 4, 2, 3, 8, 1, 8, 7, 2, 2, 2, 3, 4, 8, 1, 2, 5, 9, 1, 7, 5, 4, 5, 7, 6, 9, 6, 0, 8, 5, 9, 6, 1, 0, 6, 6, 2, 7, 9, 1, 6, 4, 6, 2, 5, 0, 8, 9, 4, 1, 9, 9, 7, 2, 4, 7, 5, 2, 8, 6, 4, 9, 1, 9

Offset

0,1

Links

G. C. Greubel, Table of n, a(n) for n = 0..10000

Example

arctan((1/2)^(1/3)) = 0.67088797871251...

Mathematica

r = (1/2)^(1/3);
N[ArcTan[r], 100]
RealDigits[%]  (* A195714 *)
RealDigits[ArcTan[Surd[1/2, 3]], 10, 120][[1]] (* Harvey P. Dale, Jul 19 2015 *)

Prog

(PARI) atan((1/2)^(1/3)) \\ G. C. Greubel, Aug 20 2018
(Magma) SetDefaultRealField(RealField(100)); Arctan((1/2)^(1/3)); // G. C. Greubel, Aug 20 2018

Crossrefs

Cf. A195712.

Sequence in context: A198932 A010499 A218012 * A247043 A019734 A273633

Adjacent sequences: A195711 A195712 A195713 * A195715 A195716 A195717

Keyword

nonn,cons

Author

Clark Kimberling, Sep 23 2011

Extensions

Corrected by Harvey P. Dale, Jul 19 2015

Status

approved