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 A019883 #27 Aug 13 2025 23:44:32 %S A019883 9,6,1,2,6,1,6,9,5,9,3,8,3,1,8,8,6,1,9,1,6,4,9,7,0,4,8,5,5,7,0,6,4,8, %T A019883 7,3,5,2,5,6,9,2,4,8,9,3,4,0,7,0,8,6,6,5,8,5,6,6,8,5,3,0,0,1,5,4,3,7, %U A019883 1,5,1,5,7,4,7,6,7,6,5,3,0,3,5,2,3,9,6,8,1,3,6,0,5,3,5,7,1,8,1 %N A019883 Decimal expansion of sine of 74 degrees. %C A019883 Equals sin(37*Pi/90). - _Wesley Ivan Hurt_, Sep 01 2014 %C A019883 An algebraic number of degree 12 and denominator 2. - _Charles R Greathouse IV_, Nov 06 2017 %H A019883 Ivan Panchenko, <a href="/A019883/b019883.txt">Table of n, a(n) for n = 0..1000</a> %H A019883 <a href="/index/Al#algebraic_12">Index entries for algebraic numbers, degree 12</a> %F A019883 Equals cos(4*Pi/45) = 2F1(19/30,11/30;1/2;3/4) / 2. - _R. J. Mathar_, Oct 27 2008 %F A019883 Equals 2*A019846*A019862. - _R. J. Mathar_, Jan 17 2021 %e A019883 0.9612616959383188619164970485570648735256924893407086658... %p A019883 Digits:=100: evalf(sin(37*Pi/90)); # _Wesley Ivan Hurt_, Sep 01 2014 %t A019883 First@RealDigits[Sin[74 Degree], 10, 120] (* _Michael De Vlieger_, Aug 31 2014 *) %o A019883 (PARI) cos(4*Pi/45) \\ _Charles R Greathouse IV_, Nov 06 2017 %K A019883 nonn,cons %O A019883 0,1 %A A019883 _N. J. A. Sloane_