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 A080516 #6 Dec 05 2013 19:56:00 %S A080516 5,25,125,1500625,7721159067190625,15177620126188504995068476821390625 %N A080516 a(1) = 5, a(n) = smallest n-th power obtained by inserting digits anywhere in a(n-1). %C A080516 After the first term, this sequence is the same as A080515. [From _Sean A. Irvine_, Aug 31 2009] %Y A080516 Cf. A080514, A080515. %K A080516 base,hard,more,nonn %O A080516 1,1 %A A080516 _Amarnath Murthy_, Mar 20 2003 %E A080516 More terms from _Robert Gerbicz_, Aug 24 2006