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 A087391 #5 Dec 05 2013 19:56:21 %S A087391 11,113,3119,91139,931193,39113903,3093119321,12391139039, %T A087391 9309311932111,111239113903901,109309311932111021, %U A087391 12011123911390390141,1410930931193211102109,901201112391139039014103 %N A087391 a(1) = 11; a(n+1) is the least prime formed by adding one or more digits to the digit reversal of a(n). %e A087391 a(2)= 113, a(3) is the smallest prime beginning with 113 and is 3119. %Y A087391 Cf. A087388, A087389, A087390. %K A087391 base,nonn %O A087391 1,1 %A A087391 _Amarnath Murthy_, Sep 09 2003 %E A087391 More terms from _David Wasserman_, May 25 2005