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%I #12 Jan 21 2019 19:01:55
%S 3,31,311,3119,31193
%N a(n) = smallest n-digit prime formed by appending a digit to a(n-1); a(1) = 3.
%C Sequence is full since appending 0, 4, 6, 8, or 5 will lead to an obvious composite and 311931, 311933, 311937, 311939 are also composite. These are the first 5 entries of A048550. - _Michel Marcus_, Jun 30 2013
%e a(1)=3
%e a(2)=31
%e a(3)=311
%e a(4)=3119
%e a(5)=31193
%K nonn,fini,full,base
%O 1,1
%A _Jorge Coveiro_, Jan 10 2005