0,1

An algebraic number of degree 24 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

Ivan Panchenko, Table of n, a(n) for n = 0..1000

Equals 2*A019841*A019867. - R. J. Mathar, Jan 17 2021

0.898794046...

RealDigits[Sin[64 Degree], 10, 120][[1]] (* Harvey P. Dale, May 09 2013 *)

(PARI) sin(16/45*Pi) \\ Charles R Greathouse IV, Nov 06 2017

Sequence in context: A230154 A338856 A182999 * A274330 A216699 A011010

Adjacent sequences: A019870 A019871 A019872 * A019874 A019875 A019876

nonn,cons

N. J. A. Sloane.

approved