0,1

An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Nov 06 2017

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

Equals cos(5*pi/36) = 2F1(17/24,7/24;1/2;3/4) / 2. - R. J. Mathar, Oct 27 2008

(PARI) sin(13/36*Pi) \\ Charles R Greathouse IV, Nov 06 2017

Sequence in context: A019740 A188738 A199789 * A197520 A068467 A131223

Adjacent sequences: A019871 A019872 A019873 * A019875 A019876 A019877

nonn,cons

N. J. A. Sloane.

approved