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 A169862 #18 Jul 09 2025 04:31:19
%S A169862 3,2,9,3,1,6,6,2,8,7,4,1,1,8,6,1,0,3,1,5,0,8,0,2,8,2,9,1,2,5,0,8,0,5,
%T A169862 8,6,4,3,7,2,2,5,7,2,9,0,3,2,7,1,2,1,2,4,8,5,3,7,7,1,0,3,9,6,1,6,8,5,
%U A169862 0,6,4,8,8,0,0,9,1,5,7,7,4,3,6,2,9,0,4,2,0,1,3,8,0,4,8,2,8,2,5,6,6,1
%N A169862 Decimal expansion of root of x^(x-1) = (x-1)^x.
%H A169862 Vincenzo Librandi, <a href="/A169862/b169862.txt">Table of n, a(n) for n = 1..5000</a>
%H A169862 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/FoiasConstant.html">Foias Constant</a>
%e A169862 3.2931662874118610315080282912508058643722572903271212485377103961...
%t A169862 RealDigits[x/.FindRoot[x^(x-1)==(x-1)^x,{x,3}, WorkingPrecision->150]] [[1]] (* _Harvey P. Dale_, Nov 09 2011 *)
%o A169862 (PARI) solve(x=3,4,x^(x-1)-(x-1)^x) \\ _Charles R Greathouse IV_, Apr 14 2014
%Y A169862 Equals A085846 + 1. Cf. A021002.
%K A169862 nonn,cons
%O A169862 1,1
%A A169862 _N. J. A. Sloane_, Jun 18 2010, based on a suggestion from Daniel Forgues