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 A387131 #6 Aug 21 2025 23:16:13 %S A387131 1,6,8,3,7,6,3,7,9,0,8,7,2,2,2,9,1,0,5,5,7,0,2,9,0,4,0,1,9,6,4,1,9,7, %T A387131 9,8,8,7,7,3,7,4,7,4,8,2,9,2,5,4,1,3,3,6,1,6,4,4,4,6,0,5,7,6,4,0,8,1, %U A387131 7,1,1,4,8,7,7,8,5,2,0,5,8,8,1,2,8,3,2,8,4,7,9,7,8,9,9,5,2,3,6,6 %N A387131 Decimal expansion of the real part of the complex solutions to log(z) = -1/z on the principal branch of log(z). %H A387131 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>. %F A387131 Equals Re(-1/LambertW(-1)). %e A387131 0.16837637908722291055702904019641979887737474829... %t A387131 RealDigits[Re[-1/ProductLog[-1]],10,100][[1]] %Y A387131 Cf. A030797, A059526, A059527. %Y A387131 Cf. A387132 (absolute value of the imaginary part). %K A387131 nonn,cons,new %O A387131 0,2 %A A387131 _Stefano Spezia_, Aug 17 2025