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 A137834 #4 Mar 31 2012 10:26:06 %S A137834 37,337,32233,32257,32353,32377,32537,35227,35257,35327,35537,72337, %T A137834 72577,73277,75577,3223357,3223537,3225323,3225737,3233227,3233533, %U A137834 3235577,3235777,3237527,3252377,3253753,3253777,3257257,3273527 %N A137834 Lesser of emirps (pairs) with a prime number of only prime digits. %F A137834 Subsequence of A133554 %Y A137834 Cf. A137835. %K A137834 base,nonn %O A137834 1,1 %A A137834 _Lekraj Beedassy_, Feb 12 2008 %E A137834 a(16)-a(29) from _Donovan Johnson_, Jun 06 2009