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a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=5.
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%I #5 May 26 2014 10:35:03

%S 5,53,353,3253,5233,5323,13523,15233,23531,31253,32531,33521,52313,

%T 53231,102533,105323,123503,125303,130253,130523,150323,203351,203531,

%U 205133,210533,231053,231503,235013,251033,253013,253103,302513,305231,320153,320513,321053

%N a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=5.

%Y Cf. A242904, A242905, A242907.

%K nonn,base

%O 1,1

%A _Michel Lagneau_, May 26 2014