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 A092994 #5 Dec 05 2013 19:56:46 %S A092994 227,37,557,0,11117,137, %T A092994 17171717171717171717171717171717171717171717171717177,197, %U A092994 23232323232323237,29297,317,0,41414141414141414141414141414141414141414141417 %N A092994 Smallest prime of the form concatenation of prime(n) with itself followed by a 7, or 0 if no such prime exists. %C A092994 a(12)=0 since the concatenation of 37 with itself, followed by a 7, is always composite. a(14), the term relative to 43, is a prime with 1089 digits. - _Giovanni Resta_, Apr 07 2006 %Y A092994 Cf. A092992, A092993, A092995. %K A092994 base,nonn %O A092994 1,1 %A A092994 _Amarnath Murthy_, Mar 28 2004 %E A092994 More terms from _Giovanni Resta_, Apr 07 2006