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A019834 Decimal expansion of sine of 25 degrees. 3
4, 2, 2, 6, 1, 8, 2, 6, 1, 7, 4, 0, 6, 9, 9, 4, 3, 6, 1, 8, 6, 9, 7, 8, 4, 8, 9, 6, 4, 7, 7, 3, 0, 1, 8, 1, 5, 6, 3, 1, 2, 9, 3, 0, 1, 1, 9, 4, 8, 6, 4, 6, 2, 3, 4, 4, 4, 4, 1, 5, 1, 5, 9, 2, 1, 0, 6, 5, 9, 8, 4, 9, 9, 8, 5, 6, 8, 9, 9, 8, 9, 6, 1, 4, 4, 6, 4, 3, 7, 3, 6, 1, 9, 4, 3, 1, 5, 8, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

An algebraic number of degree 12 and denominator 2. - Charles R Greathouse IV, Aug 27 2017

LINKS

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

FORMULA

Equals A019829 * A019894 + A019814 * A019879. - R. J. Mathar, Jan 27 2021

MATHEMATICA

RealDigits[Sin[25 Degree], 10, 120][[1]] (* Harvey P. Dale, Mar 18 2018 *)

PROG

(PARI) sin(5*Pi/36) \\ Charles R Greathouse IV, Aug 27 2017

CROSSREFS

Sequence in context: A023634 A199609 A284692 * A261557 A270809 A087507

Adjacent sequences:  A019831 A019832 A019833 * A019835 A019836 A019837

KEYWORD

nonn,cons

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 20 10:12 EDT 2021. Contains 343130 sequences. (Running on oeis4.)