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 A019880 #22 Aug 13 2025 23:44:36 %S A019880 9,4,5,5,1,8,5,7,5,5,9,9,3,1,6,8,1,0,3,4,8,1,2,4,7,0,7,5,1,9,4,0,3,1, %T A019880 7,7,6,7,6,4,5,8,7,2,5,9,1,8,9,5,2,7,0,3,0,1,0,1,4,0,8,2,0,9,6,7,5,9, %U A019880 6,8,0,0,9,3,0,7,7,2,8,6,3,2,6,1,9,3,0,3,0,7,7,8,6,0,9,1,9,2,9 %N A019880 Decimal expansion of sine of 71 degrees. %C A019880 Equals sin(71*Pi/180). - _Wesley Ivan Hurt_, Sep 01 2014 %C A019880 An algebraic number of degree 48 and denominator 2. - _Charles R Greathouse IV_, Nov 06 2017 %H A019880 Ivan Panchenko, <a href="/A019880/b019880.txt">Table of n, a(n) for n = 0..1000</a> %H A019880 <a href="/index/Al#algebraic_48">Index entries for algebraic numbers, degree 48</a> %e A019880 0.9455185755993168103481247075194031776764587259189527030101... %p A019880 Digits:=100: evalf(sin(71*Pi/180)); # _Wesley Ivan Hurt_, Sep 01 2014 %t A019880 First@RealDigits[Sin[71 Degree], 10, 120] (* _Michael De Vlieger_, Aug 31 2014 *) %o A019880 (PARI) sin(71/180*Pi) \\ _Charles R Greathouse IV_, Nov 06 2017 %K A019880 nonn,cons %O A019880 0,1 %A A019880 _N. J. A. Sloane_