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 A019891 #19 Jul 08 2025 07:42:30 %S A019891 9,9,0,2,6,8,0,6,8,7,4,1,5,7,0,3,1,5,0,8,3,7,7,4,8,6,7,3,4,4,8,5,0,7, %T A019891 5,9,2,5,1,0,8,9,7,9,3,7,6,8,8,8,6,5,0,0,0,8,9,7,1,4,1,2,7,6,0,0,9,9, %U A019891 5,8,1,7,7,2,9,3,3,6,4,5,4,9,8,9,9,1,8,6,1,6,7,5,9,6,4,9,3,0,5 %N A019891 Decimal expansion of sine of 82 degrees. %C A019891 An algebraic number of degree 12 and denominator 2. - _Charles R Greathouse IV_, Nov 06 2017 %H A019891 Ivan Panchenko, <a href="/A019891/b019891.txt">Table of n, a(n) for n = 0..1000</a> %H A019891 <a href="/index/Al#algebraic_12">Index entries for algebraic numbers, degree 12</a> %F A019891 Equals cos(2*Pi/45) = 2F1(17/30,13/30;1/2;3/4) / 2. - _R. J. Mathar_, Oct 27 2008 %F A019891 Equals sin(41*Pi/90). - _Wesley Ivan Hurt_, Aug 31 2014 %e A019891 0.9902680687415703150837748673448507592510897937688865000... %p A019891 Digits:=100: evalf(sin(41*Pi/90)); # _Wesley Ivan Hurt_, Aug 31 2014 %t A019891 First@RealDigits[Sin[82 Degree], 10, 120] (* _Michael De Vlieger_, Aug 31 2014 *) %o A019891 (PARI) cos(2/45*Pi) \\ _Charles R Greathouse IV_, Nov 06 2017 %K A019891 nonn,cons %O A019891 0,1 %A A019891 _N. J. A. Sloane_