A195771 Decimal expansion of arcsec(5).

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

Offset

1,2

Links

Table of n, a(n) for n=1..100.

Formula

Equals arcsin(2*sqrt(6)/5) = arccos(1/5) = arctan(2*sqrt(6)). - Amiram Eldar, May 24 2021

Example

arcsec(5) = 1.3694384060045658277761961394221280318585...

Mathematica

(See A195769.)
RealDigits[ArcSec[5], 10, 120][[1]] (* Harvey P. Dale, Aug 27 2023 *)

Crossrefs

Cf. A195769.

Sequence in context: A245223 A180593 A271742 * A086276 A176322 A300714

Adjacent sequences: A195768 A195769 A195770 * A195772 A195773 A195774

Keyword

nonn,cons

Author

Clark Kimberling, Sep 24 2011

Status

approved