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%I #11 Jul 11 2015 16:15:07
%S 4,46,469,10469,101469,10141569,101421569,1014221569,101421522569,
%T 1014215225269,101421522526339,1014215225263349,101421522526334359,
%U 10142152252633435389,101421522526334353839,1014215225263346353839
%N Smallest number that contains the first n semiprimes as substrings.
%C Semiprime analog of A054261.
%D Jonathan Vos Post, Posting to the Sequence Fans Mailing List, May 24 2010
%Y Cf. A000040, A001358, A054260, A035239, A178057, A144565, A169798.
%K nonn,base,more
%O 1,1
%A _N. J. A. Sloane_, Nov 25 2010
%E More terms from _Sean A. Irvine_, Dec 02 2010
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