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 A103560 #14 Feb 13 2015 09:06:54
%S A103560 3,7,8,6,3,5,5,7,6,0,0,0,1,0,1,0,5,7,1,0,4,4,6,6,8,9,1,9,6,0,0,0,9,9,
%T A103560 1,6,8,9,5,8,7,1,3,8,4,6,4,7,2,5,4,8,0,2,9,9,0,6,0,8,4,4,6,5,1,8,2,3,
%U A103560 0,1,8,3,7,6,4,7,6,6,2,7,5,9,5,7,1,1,3,5,2,6,6,7,9,2,1,4,5,0,6,1,3,9,2,3,2
%N A103560 Decimal expansion of solution to x*13^x = 1.
%F A103560 Decimal expansion of W(log 13)/log 13.
%e A103560 0.37863557600010105710446689196...
%t A103560 RealDigits[ ProductLog[ Log[13]]/Log[13], 10, 111][[1]] (* _Robert G. Wilson v_, Mar 23 2005 *)
%t A103560 RealDigits[Fold[N[#2^#1, 128] &, 1/13, Table[1/13, {8250}]], 10, 105][[1]] (* also see A194346, _Robert G. Wilson v_, Mar 20 2012 *)
%o A103560 (PARI) solve(x=0,1,x*13^x-1) \\ _Charles R Greathouse IV_, Mar 21 2012
%K A103560 nonn,cons
%O A103560 0,1
%A A103560 _Zak Seidov_, Mar 23 2005
%E A103560 More terms from _Robert G. Wilson v_, Mar 23 2005