A195719 Decimal expansion of arccos(-(1/2)^(2/3)).

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

Offset: 1

Author

Clark Kimberling, Sep 23 2011

Keywords

• nonn
• cons

Examples

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

Links

• G. C. Greubel, Table of n, a(n) for n = 1..10000
• Index entries for transcendental numbers

Crossrefs

Cf. A195716.

Programs

Magma

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

Mathematica

r = (1/2)^(2/3);
N[ArcCos[-r], 100]
RealDigits[%]

PARI

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