A019817 - OEIS

%I #17 Aug 21 2023 11:49:39

%S 1,3,9,1,7,3,1,0,0,9,6,0,0,6,5,4,4,4,1,1,2,4,9,6,6,6,3,3,0,1,1,0,5,2,

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

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

%N Decimal expansion of sine of 8 degrees.

%C An algebraic number of degree 24 and denominator 2. - _Charles R Greathouse IV_, Aug 27 2017

%H Ivan Panchenko, <a href="/A019817/b019817.txt">Table of n, a(n) for n = 0..1000</a>

%H <a href="/index/Al#algebraic_24">Index entries for algebraic numbers, degree 24</a>

%F Equals 2*A019813*A019895. - _R. J. Mathar_, Jan 17 2021

%e 0.13917310...

%o (PARI) sin(2*Pi/45) \\ _Charles R Greathouse IV_, Aug 27 2017

%K nonn,cons

%O 0,2

%A _N. J. A. Sloane_