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A152608 a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that the concatenation of any three consecutive digits in the sequence is a prime.

%I A152608 #4 Jun 09 2016 21:28:12
%S A152608 1,2,7,19,37,39,71,91,93,733,739,773,971,977,3311,3733,7331,7337,9719,
%T A152608 9773,31131,31137,33113,73311,311311,311313,733113,733131,733137,
%U A152608 971911,3113113,7331131,7331137,9719113,9719191,9719193
%N A152608 a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that the concatenation of any three consecutive digits in the sequence is a prime.
%C A152608 Computed by Jean-Marc Falcoz.
%H A152608 Eric Angelini, <a href="http://www.cetteadressecomportecinquantesignes.com/ConsecDig.htm">Chiffres consecutifs dans quelques suites</a>
%H A152608 E. Angelini, <a href="/A152136/a152136.pdf">Chiffres consecutifs dans quelques suites</a> [Cached copy, with permission]
%Y A152608 Cf. A158652, A152604-A152609.
%K A152608 nonn,base
%O A152608 1,2
%A A152608 _N. J. A. Sloane_, Sep 23 2009