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 A343059 #21 Feb 04 2025 10:53:44 %S A343059 2,2,8,2,4,3,4,7,4,3,9,0,1,4,9,9,3,8,0,7,7,6,1,1,3,6,2,0,6,1,0,1,4,7, %T A343059 8,2,7,3,8,7,8,1,6,8,0,9,8,0,3,5,2,6,3,7,9,7,9,6,8,8,9,1,9,6,0,3,8,2, %U A343059 4,8,5,5,7,1,3,8,8,1,8,7,8,9,1,4,6,9,3,8,7,0,3,7,7,1,5,5,5,6,8,2,6,0,2,7,1,5,9,7,1,7,3,5,3,4,2,5,3,8,7 %N A343059 Decimal expansion of tan(Pi/14). %C A343059 Root of the equation -1 + 21*x^2 - 35*x^4 + 7*x^6 = 0. - _Vaclav Kotesovec_, Apr 04 2021 %H A343059 G. C. Greubel, <a href="/A343059/b343059.txt">Table of n, a(n) for n = 0..10000</a> %H A343059 <a href="/index/Al#algebraic_06">Index entries for algebraic numbers, degree 6</a>. %e A343059 0.228243474390149938077611362061014782... %t A343059 RealDigits[Tan[Pi/14], 10, 125][[1]] (* _Amiram Eldar_, Apr 27 2021 *) %o A343059 (PARI) tan(Pi/14) %o A343059 (SageMath) numerical_approx(tan(pi/14), digits=124) # _G. C. Greubel_, Sep 30 2022 %Y A343059 Cf. A232736 (sin(Pi/14)), A232735 (cos(Pi/14)). %K A343059 nonn,cons,easy %O A343059 0,1 %A A343059 _Seiichi Manyama_, Apr 04 2021