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 A085661 #14 Aug 06 2024 05:16:06 %S A085661 6,7,8,4,3,0,4,7,7,3,6,0,7,4,0,2,2,8,9,7,9,1,6,0,1,2,6,4,8,0,3,8,6,3, %T A085661 2,5,0,5,2,1,1,7,2,6,0,0,9,6,1,0,1,9,4,2,0,8,2,7,4,1,1,2,0,9,2,3,7,3, %U A085661 9,1,3,3,4,5,6,3,7,1,3,4,4,5,8,3,7,0,1,1,9,5,4,3,2,1,6,0,9,5,2 %N A085661 Decimal expansion of sin(sin(sin(1))). %H A085661 Jens Blanck, <a href="https://doi.org/10.1007/3-540-45335-0_24">Exact real arithmetic systems: results of competition</a>, pp. 389-393 of J. Blanck et al., eds., Computability and Complexity in Analysis (CCA 2000), Lect. Notes Computer Science, Springer-Verlag, 2001; <a href="https://citeseerx.ist.psu.edu/pdf/995022a4b87d399debf7b5bda0b52a3615a8499f">alternative link</a>. %e A085661 0.67843047736074022897916012648038632505211726009610... %t A085661 RealDigits[Sin[Sin[Sin[1]]], 10, 120][[1]] (* _Amiram Eldar_, Jun 08 2023 *) %o A085661 (PARI) sin(sin(sin(1))) \\ _Charles R Greathouse IV_, Mar 25 2014 %Y A085661 Cf. A049469, A085662. %K A085661 cons,nonn %O A085661 0,1 %A A085661 _N. J. A. Sloane_, Jul 15 2003