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 A019945 #12 Sep 08 2022 08:44:44 %S A019945 1,0,7,2,3,6,8,7,1,0,0,2,4,6,8,2,5,3,2,9,4,6,0,2,7,7,4,8,0,7,2,5,5,0, %T A019945 1,6,6,2,8,9,3,9,7,7,9,1,4,3,1,3,8,4,6,5,3,9,9,2,8,8,4,2,5,3,8,1,0,4, %U A019945 2,7,3,4,8,7,1,7,3,3,6,4,2,8,7,2,7,9,0,6,0,8,1,3,2,3,0,6,8,7,9 %N A019945 Decimal expansion of tangent of 47 degrees. %C A019945 Also the decimal expansion of cotangent of 43 degrees. - _Ivan Panchenko_, Sep 01 2014 %H A019945 Ivan Panchenko, <a href="/A019945/b019945.txt">Table of n, a(n) for n = 1..1000</a> %e A019945 1.07236871002468253294602774807255016628939779143138465... %t A019945 RealDigits[Tan[47*Pi/180], 10, 100][[1]] (* _G. C. Greubel_, Nov 24 2018 *) %o A019945 (PARI) default(realprecision, 100); tan(47*Pi/180) \\ _G. C. Greubel_, Nov 24 2018 %o A019945 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Tan(47*Pi(R)/180); // _G. C. Greubel_, Nov 24 2018 %o A019945 (Sage) numerical_approx(tan(47*pi/180), digits=100) # _G. C. Greubel_, Nov 24 2018 %Y A019945 Cf. A019856 (sine of 47 degrees). %K A019945 nonn,cons %O A019945 1,3 %A A019945 _N. J. A. Sloane_