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 A075596 #7 Dec 05 2013 19:55:38 %S A075596 2,127,11273,1112731,411127319,34111273199,3341112731993, %T A075596 233411127319933,32334111273199339,3323341112731993391, %U A075596 633233411127319933919,66332334111273199339193,1663323341112731993391937 %N A075596 a(1) = 2 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1). %Y A075596 Cf. A075595, A075597, A075598, A075599, A075600, A075601, A075602. %K A075596 base,nonn %O A075596 1,1 %A A075596 _Amarnath Murthy_, Sep 28 2002 %E A075596 More terms from _Sascha Kurz_, Jan 20 2003 %E A075596 One more term from _David Wasserman_, Jan 20 2005