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 A238274 #30 May 26 2021 05:12:38 %S A238274 1,3,7,4,5,5,7,0,1,0,7,4,3,7,0,7,4,8,6,5,3,0,0,9,3,0,5,6,7,6,9,6,6,2, %T A238274 6,7,2,3,4,4,2,9,7,6,3,6,5,3,7,6,2,6,5,0,0,1,0,9,6,5,7,1,0,6,3,2,4,2, %U A238274 1,6,6,9,5,6,5,6,4,8,7,1,5,1,7,1,3,8,3,6,7,0,0,6,4,1,9,6,4,9,4,0,0,6,8,2,4 %N A238274 Decimal expansion of abs(LambertW(-1)). %H A238274 G. C. Greubel, <a href="/A238274/b238274.txt">Table of n, a(n) for n = 1..5000</a> %H A238274 Stanislav Sykora, <a href="https://doi.org/10.3247/SL6Math16.002">Fixed points of the mappings exp(z) and -exp(z) in C</a>, 2016. %e A238274 1.37455701074370748653... %t A238274 RealDigits[N[Abs[LambertW[-1]], 105]][[1]] %Y A238274 Cf. A009306, A030178, A177380, A185221. %K A238274 nonn,cons %O A238274 1,2 %A A238274 _Vaclav Kotesovec_, Feb 24 2014