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 A019889 Decimal expansion of sine of 80 degrees. 4
 9, 8, 4, 8, 0, 7, 7, 5, 3, 0, 1, 2, 2, 0, 8, 0, 5, 9, 3, 6, 6, 7, 4, 3, 0, 2, 4, 5, 8, 9, 5, 2, 3, 0, 1, 3, 6, 7, 0, 6, 4, 3, 2, 5, 1, 7, 1, 9, 8, 4, 2, 4, 1, 8, 7, 9, 0, 0, 2, 5, 7, 5, 2, 3, 5, 5, 8, 2, 7, 5, 9, 9, 9, 4, 3, 0, 3, 6, 2, 3, 9, 2, 7, 4, 6, 7, 8, 4, 1, 0, 0, 5, 6, 1, 1, 9, 8, 9, 9 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Also the real part of I^(1/9). - Stanislav Sykora, Nov 29 2013 Equals sin(4*Pi/9). - Wesley Ivan Hurt, Sep 01 2014 LINKS Ivan Panchenko, Table of n, a(n) for n = 0..1000 FORMULA Equals 2F1(7/12,5/12;1/2;3/4) / 2. [R. J. Mathar, Oct 27 2008] EXAMPLE 0.9848077530122080593667430245895230136706432517198424187900... MAPLE Digits:=100: evalf(sin(4*Pi/9)); # Wesley Ivan Hurt, Sep 01 2014 MATHEMATICA RealDigits[ Cos[Pi/18], 10, 111] (* Robert G. Wilson v *) PROG (PARI) real(I^(1/9)) \\ Michel Marcus, Nov 29 2013 CROSSREFS Sequence in context: A199862 A019720 A200117 * A243266 A010548 A011458 Adjacent sequences:  A019886 A019887 A019888 * A019890 A019891 A019892 KEYWORD nonn,cons AUTHOR STATUS approved

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Last modified September 25 20:53 EDT 2018. Contains 315425 sequences. (Running on oeis4.)