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 A019840 #20 Jul 08 2025 07:40:53 %S A019840 5,1,5,0,3,8,0,7,4,9,1,0,0,5,4,2,1,0,0,8,1,6,3,1,9,3,6,3,9,8,1,3,8,2, %T A019840 8,3,4,1,6,0,8,2,8,3,3,7,4,6,3,1,9,4,7,3,8,6,1,2,2,0,2,7,6,2,0,0,5,0, %U A019840 4,4,3,6,3,7,0,9,2,9,2,3,1,8,8,0,3,7,2,8,1,0,5,8,4,6,4,3,5,9,6 %N A019840 Decimal expansion of sine of 31 degrees. %C A019840 This sequence is also decimal expansion of cosine of 59 degrees. - _Mohammad K. Azarian_, Jun 29 2013 %C A019840 An algebraic number of degree 48 and denominator 2. - _Charles R Greathouse IV_, Aug 27 2017 %H A019840 Ivan Panchenko, <a href="/A019840/b019840.txt">Table of n, a(n) for n = 0..1000</a> %H A019840 <a href="/index/Al#algebraic_48">Index entries for algebraic numbers, degree 48</a> %o A019840 (PARI) sin(31*Pi/180) \\ _Charles R Greathouse IV_, Aug 27 2017 %K A019840 nonn,cons %O A019840 0,1 %A A019840 _N. J. A. Sloane_