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 A173058 #2 Mar 31 2012 12:38:28
%S A173058 8,512,
%T A173058 1056589062271330492704679569833033213037694652072243044255921418053347805113449718948834511775314375789348789986514257357764695119005371074501077956925879153816773367998010168337463035352852882106048465816422376808296056585503123477676793797534072952979077161795475996672
%N A173058 Leyland numbers (Cubes), a^b+b^a, a and b > 1.
%e A173058 2^3=8, 8^3=512,
%e A173058 101851798816724304313422284420468908052573419683296812531807022467719064988166\
%e A173058 8353091698688^3=1056...6672
%t A173058 f[a_,b_]:=a^b+b^a; Select[Union[Flatten[Table[f[a,b],{a,2,150},{b,2,150}]]],IntegerQ[(#1)^(1/3)]&]
%Y A173058 Cf. A076980, A173054, A173055, A173056
%K A173058 nonn,bref
%O A173058 1,1
%A A173058 _Vladimir Joseph Stephan Orlovsky_, Feb 08 2010