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 A104751 #6 Dec 03 2014 20:05:34
%S A104751 1,3,0,0,9,6,2,2,2,6,3,5,8,8,5,4,3,9,2,7,3,2,6,4,0,8,5,2,6,1,8,5,6,0,
%T A104751 5,1,0,2,4,9,8,5,5,6,9,6,8,2,9,8,4,3,1,0,8,0,6,2,9,2,5,7,3,4,4,8,0,9,
%U A104751 9,4,0,5,6,2,3,4,7,0,8,2,5,9,4,1,8,4,6,7,3,1,7,3,2,6,4,3,1,5,5,9,8,1,2,4,7,6,6,9,1,1,9,0,3,4,5,0,9,8,7,3
%N A104751 Decimal expansion of solution to x^(3^x)=3.
%F A104751 x = 1.3009622263588543927... ; x^(3^x)=3.
%t A104751 RealDigits[x/.FindRoot[x^(3^x)==3,{x,1.3},WorkingPrecision->120]][[1]] (* _Harvey P. Dale_, Aug 08 2012 *)
%Y A104751 Cf. A103561, A104750-A104761.
%K A104751 cons,nonn
%O A104751 1,2
%A A104751 _Zak Seidov_, Mar 23 2005
%E A104751 More terms from _Harvey P. Dale_, Aug 08 2012