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%I #2 Dec 05 2013 19:55:16
%S 4,41,241,2411,32411,324113,6324113,63241133,1563241133,15632411339,
%T 815632411339,81563241133919,281563241133919,2815632411339191,
%U 322815632411339191,32281563241133919151,432281563241133919151
%N a(1) = 4; a(2n) = smallest prime that is a right concatenation of a(2n-1) and a number with no insignificant zeros and a(2n+1) = smallest prime ending in ( the least significant digits) a(2n-1). Alternate left and right concatenation yielding primes.
%e a(4) = 2411 staring with a(3) =241 and a(5) = 32411 ending in a(4) = 2411.
%Y Cf. A053582, A069605, A069606, A069607, A069608, A069609, A069610, A069611, A069613, A069614, A069615.
%K nonn,base
%O 1,1
%A _Amarnath Murthy_, Mar 27 2002
%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 30 2003