0,1

This sequence is also decimal expansion of cosine of 49 degrees. - Mohammad K. Azarian, Jun 29 2013

An algebraic number of degree 48 and denominator 2. - Charles R Greathouse IV, Nov 05 2017

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

(PARI) sin(41/180*Pi) \\ Charles R Greathouse IV, Nov 05 2017

Sequence in context: A070860 A198354 A195956 * A185273 A330065 A191220

Adjacent sequences: A019847 A019848 A019849 * A019851 A019852 A019853

nonn,cons

N. J. A. Sloane.

approved