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 A019834 #18 Aug 21 2023 11:47:06 %S A019834 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, %T A019834 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, %U A019834 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 %N A019834 Decimal expansion of sine of 25 degrees. %C A019834 An algebraic number of degree 12 and denominator 2. - _Charles R Greathouse IV_, Aug 27 2017 %H A019834 Ivan Panchenko, <a href="/A019834/b019834.txt">Table of n, a(n) for n = 0..1000</a> %H A019834 <a href="/index/Al#algebraic_12">Index entries for algebraic numbers, degree 12</a> %F A019834 Equals A019829 * A019894 + A019814 * A019879. - _R. J. Mathar_, Jan 27 2021 %t A019834 RealDigits[Sin[25 Degree],10,120][[1]] (* _Harvey P. Dale_, Mar 18 2018 *) %o A019834 (PARI) sin(5*Pi/36) \\ _Charles R Greathouse IV_, Aug 27 2017 %K A019834 nonn,cons %O A019834 0,1 %A A019834 _N. J. A. Sloane_