This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A019874 #21 Apr 24 2024 07:44:17 %S A019874 9,0,6,3,0,7,7,8,7,0,3,6,6,4,9,9,6,3,2,4,2,5,5,2,6,5,6,7,5,4,3,1,6,9, %T A019874 8,3,2,6,7,7,1,2,6,2,5,1,7,5,8,6,4,6,8,0,8,7,1,2,9,8,4,0,8,8,2,2,6,1, %U A019874 8,3,8,5,9,3,6,3,6,9,4,1,1,2,9,0,3,6,3,7,0,1,0,8,5,4,5,7,7,0,2 %N A019874 Decimal expansion of sine of 65 degrees. %C A019874 An algebraic number of degree 12 and denominator 2. - _Charles R Greathouse IV_, Nov 06 2017 %H A019874 Ivan Panchenko, <a href="/A019874/b019874.txt">Table of n, a(n) for n = 0..1000</a> %H A019874 <a href="/index/Al#algebraic_12">Index entries for algebraic numbers, degree 12</a> %F A019874 Equals cos(5*Pi/36) = 2F1(17/24,7/24;1/2;3/4) / 2. - _R. J. Mathar_, Oct 27 2008 %F A019874 Equals A019861 * A019886 + A019822 * A019847 = A010527 * A019894 + A019814*(1/2). - _R. J. Mathar_, Jan 27 2021 %t A019874 RealDigits[Sin[65 Degree],10,120][[1]] (* _Harvey P. Dale_, Oct 29 2020 *) %o A019874 (PARI) sin(13/36*Pi) \\ _Charles R Greathouse IV_, Nov 06 2017 %K A019874 nonn,cons %O A019874 0,1 %A A019874 _N. J. A. Sloane_