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 A019825 #20 Aug 21 2023 11:49:06 %S A019825 2,7,5,6,3,7,3,5,5,8,1,6,9,9,9,1,8,5,6,4,9,9,7,1,5,7,4,6,1,1,3,0,4,1, %T A019825 4,7,7,1,2,4,4,7,3,2,6,4,5,6,8,9,6,6,8,1,8,6,6,9,6,5,0,7,2,0,1,9,7,3, %U A019825 8,2,5,5,1,1,7,4,8,3,6,5,7,5,2,6,6,9,3,3,5,8,9,3,6,6,9,8,4,5,4 %N A019825 Decimal expansion of sine of 16 degrees. %C A019825 An algebraic number of degree 24 and denominator 2. - _Charles R Greathouse IV_, Aug 27 2017 %H A019825 Ivan Panchenko, <a href="/A019825/b019825.txt">Table of n, a(n) for n = 0..1000</a> %H A019825 <a href="/index/Al#algebraic_24">Index entries for algebraic numbers, degree 24</a> %F A019825 Equals 2*A019817*A019891. - _R. J. Mathar_, Jan 17 2021 %e A019825 0.27563735581699... %t A019825 RealDigits[Sin[16 Degree],10,120][[1]] (* _Harvey P. Dale_, Nov 24 2011 *) %o A019825 (PARI) sin(4*Pi/45) \\ _Charles R Greathouse IV_, Aug 27 2017 %K A019825 nonn,cons %O A019825 0,1 %A A019825 _N. J. A. Sloane_