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 A134725 #2 Mar 30 2012 17:33:50 %S A134725 1,49,162536,496481100,121144169196225,256289324361400441, %T A134725 484529576625676729784,84190096110241089115612251296, %U A134725 136914441521160016811764184919362025 %N A134725 Concatenation of next n squares of positive integers. %Y A134725 Cf. A053067. The squares: A000290. %K A134725 base,easy,nonn %O A134725 1,2 %A A134725 _Omar E. Pol_, Nov 12 2007