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 A104689 #15 Feb 03 2025 10:49:17
%S A104689 1,4,2,0,3,7,0,1,1,8,0,2,0,0,8,3,4,5,8,4,5,8,4,2,1,2,8,3,8,9,9,7,7,2,
%T A104689 9,8,0,5,8,6,4,2,7,3,3,6,7,6,4,8,9,5,2,3,6,3,2,7,4,6,4,0,1,1,6,2,9,9,
%U A104689 7,5,2,1,4,0,1,4,0,0,6,3,3,5,8,5,5,7,3,4,3,4,6,9,7,1,3,9,7,4,4,9,8,6,2,6,4
%N A104689 Decimal expansion of solution to exp(x) = e + x.
%C A104689 For the negative solution, see A202347.
%H A104689 G. C. Greubel, <a href="/A104689/b104689.txt">Table of n, a(n) for n = 1..10000</a>
%H A104689 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>.
%e A104689 1.42037011802008345845842...
%t A104689 RealDigits[x/.FindRoot[E^x==E+x,{x,1.4},WorkingPrecision->120], 10, 120] [[1]] (* _Harvey P. Dale_, Aug 01 2011 *)
%t A104689 RealDigits[-E - LambertW[-1, -Exp[-E]], 10, 100][[1]] (* _G. C. Greubel_, Nov 09 2017 *)
%o A104689 (PARI) solve(x=0, 2, exp(x)-exp(1)-x) \\ _Michel Marcus_, Nov 09 2017
%Y A104689 Cf. A202320, A202347.
%K A104689 cons,nonn
%O A104689 1,2
%A A104689 _Zak Seidov_, Apr 23 2005