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a(1) = 17 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).
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%I #5 Dec 05 2013 19:55:39

%S 17,1171,211711,32117117,6321171179,263211711799,42632117117999,

%T 6426321171179993,564263211711799931,15642632117117999311,

%U 1156426321171179993119,311564263211711799931199

%N a(1) = 17 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 Cf. A075595, A075596, A075597, A075598, A075599, A075600, A075601.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Sep 28 2002

%E More terms from _Sascha Kurz_, Jan 23 2003