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 A153164 #4 Mar 30 2012 17:28:24
%S A153164 337,409,701,827
%N A153164 Primes p with property that p^2 is a concatenation of two 3-digit primes.
%C A153164 There are exactly 4 such numbers.
%e A153164 {337,409,701,827}^2 ={113_569, 167_281, 491_401, 683_929}.
%Y A153164 Cf. A153048, A153050.
%K A153164 fini,full,nonn,base
%O A153164 1,1
%A A153164 _Zak Seidov_, Dec 20 2008
%E A153164 Edited by _Charles R Greathouse IV_, Apr 24 2010