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 A019873 #17 Aug 21 2023 11:49:05 %S A019873 8,9,8,7,9,4,0,4,6,2,9,9,1,6,6,9,9,2,7,8,2,2,9,5,6,7,6,6,9,5,7,8,5,3, %T A019873 5,4,9,2,9,9,7,3,4,1,3,8,1,8,4,2,1,8,6,9,9,3,8,1,9,6,9,6,4,4,6,1,0,4, %U A019873 3,0,2,7,0,9,8,9,1,4,8,9,9,9,9,1,4,8,1,5,1,3,3,9,2,2,2,3,9,7,1 %N A019873 Decimal expansion of sine of 64 degrees. %C A019873 An algebraic number of degree 24 and denominator 2. - _Charles R Greathouse IV_, Nov 06 2017 %H A019873 Ivan Panchenko, <a href="/A019873/b019873.txt">Table of n, a(n) for n = 0..1000</a> %H A019873 <a href="/index/Al#algebraic_24">Index entries for algebraic numbers, degree 24</a> %F A019873 Equals 2*A019841*A019867. - _R. J. Mathar_, Jan 17 2021 %e A019873 0.898794046... %t A019873 RealDigits[Sin[64 Degree],10,120][[1]] (* _Harvey P. Dale_, May 09 2013 *) %o A019873 (PARI) sin(16/45*Pi) \\ _Charles R Greathouse IV_, Nov 06 2017 %K A019873 nonn,cons %O A019873 0,1 %A A019873 _N. J. A. Sloane_