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 A133554 #3 Mar 31 2012 10:26:06 %S A133554 37,337,3257,3373,3527,7577,32233,32257,32353,32377,32537,35227,35257, %T A133554 35327,35537,72337,72577,73277,75577,322573,323333,327553,332573, %U A133554 333227,333253,333337,337537,353737,353777,355573,357737,372277,372377,373357,373777,377737,723727,725357,757577 %N A133554 Lesser of emirps (pairs) with only prime digits (A128388). %Y A133554 Cf. A128388, A133753. %K A133554 nonn,base %O A133554 1,1 %A A133554 _Lekraj Beedassy_, Jan 21 2008 %E A133554 Extended by _Ray Chandler_, Jan 30 2008