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 A343062 #26 Mar 11 2023 07:56:24 %S A343062 1,3,1,6,5,2,4,9,7,5,8,7,3,9,5,8,5,3,4,7,1,5,2,6,4,5,7,4,0,9,7,1,7,1, %T A343062 0,3,5,9,2,8,1,4,1,0,2,2,2,3,2,3,7,5,7,3,5,5,3,5,6,5,3,2,5,7,8,9,7,5, %U A343062 9,8,3,9,0,1,0,6,2,2,0,2,8,3,0,9,1,0,0,7,8,0,6,7,5,0,3,3,2,3,1,8,7,7,9,8,2,3,0,6,0,4,2 %N A343062 Decimal expansion of tan(Pi/24). %H A343062 Wikipedia, <a href="https://en.wikipedia.org/wiki/Trigonometric_constants_expressed_in_real_radicals">Trigonometric constants expressed in real radicals</a> %F A343062 Equals sqrt( (2-sqrt(2+sqrt(3)))/(2+sqrt(2+sqrt(3))) ). %F A343062 Equals (sqrt(2)-1)*(sqrt(3)-sqrt(2)) = sqrt(2)-sqrt(3)+sqrt(6)-2. %e A343062 0.13165249758739585347152... %t A343062 RealDigits[Tan[Pi/24], 10, 100][[1]] (* _Amiram Eldar_, Apr 27 2021 *) %o A343062 (PARI) tan(Pi/24) %o A343062 (PARI) sqrt((2-sqrt(2+sqrt(3)))/(2+sqrt(2+sqrt(3)))) %o A343062 (PARI) (sqrt(2)-1)*(sqrt(3)-sqrt(2)) %Y A343062 Cf. A144982 (cos (Pi/24)). %K A343062 nonn,cons,easy %O A343062 0,2 %A A343062 _Seiichi Manyama_, Apr 04 2021