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 A019972 #20 Aug 21 2023 11:49:40 %S A019972 3,4,8,7,4,1,4,4,4,3,8,4,0,9,0,8,6,5,0,6,9,6,2,2,4,2,2,5,0,9,9,3,8,4, %T A019972 9,6,3,4,3,0,4,9,0,8,0,4,0,9,1,3,6,9,9,5,3,5,4,4,3,7,9,9,4,5,4,8,9,7, %U A019972 8,5,3,2,1,8,5,7,5,5,4,4,5,1,8,0,2,4,1,1,7,7,3,0,4,2,8,5,1,5,7 %N A019972 Decimal expansion of tangent of 74 degrees. %C A019972 Also the decimal expansion of cotangent of 16 degrees. - _Ivan Panchenko_, Sep 01 2014 %C A019972 An algebraic integer of degree 24. - _Charles R Greathouse IV_, Feb 03 2015 %H A019972 Ivan Panchenko, <a href="/A019972/b019972.txt">Table of n, a(n) for n = 1..1000</a> %H A019972 <a href="/index/Al#algebraic_24">Index entries for algebraic numbers, degree 24</a> %e A019972 3.48741444384090865069622422509938496343049080409136995... %t A019972 RealDigits[Tan[74 Degree],10,120][[1]] (* _Harvey P. Dale_, Jul 21 2018 *) %o A019972 (PARI) tan(37*Pi/90) \\ _Charles R Greathouse IV_, Feb 03 2015 %o A019972 (Magma) SetDefaultRealField(RealField(100)); R:=RealField(); Tan(37*Pi(R)/90); // _G. C. Greubel_, Nov 21 2018 %o A019972 (Sage) numerical_approx(tan(37*pi/90), digits=100) # _G. C. Greubel_, Nov 21 2018 %Y A019972 Cf. A019883. %K A019972 nonn,cons %O A019972 1,1 %A A019972 _N. J. A. Sloane_