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