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 A348693 #12 Oct 30 2021 11:36:40
%S A348693 3,1,1,8,2,1,1,3,1,8,6,4,3,2,6,9,8,3,2,3,8,3,2,1,3,7,7,7,7,7,0,6,5,0,
%T A348693 6,9,0,7,0,6,9,2,4,3,5,5,4,1,1,6,4,3,2,5,5,4,3,9,8,2,0,0,8,9,9,6,8,3,
%U A348693 0,6,6,0,0,8,8,1,8,0,1,8,4,5,9,7,3,8,0,6,9,4,6,8,7,5,3,0,9,4,4,8,8,1,7,8,1
%N A348693 Decimal expansion of Integral_{x=0..oo} x*exp(-x)/(exp(x)+exp(-x)-1) dx.
%e A348693 0.3118211318643269832...
%t A348693 RealDigits[Integrate[x*Exp[-x]/(Exp[x] + Exp[-x] - 1), {x, 0, Infinity}], 10, 105][[1]] (* _Amiram Eldar_, Oct 30 2021 *)
%o A348693 (SageMath)
%o A348693 RealField(45)(numerical_integral(x*exp(-x)/(exp(x)+exp(-x)-1), 0, +Infinity)[0])
%Y A348693 Cf. A001620.
%K A348693 nonn,cons
%O A348693 0,1
%A A348693 _Dumitru Damian_, Oct 30 2021