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Beginning with 2, least new prime such that the concatenation a(n), a(n-1), ...a(2), a(1), a(2), ...a(n) is prime.
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%I #4 Dec 05 2013 19:56:38

%S 2,7,3,41,13,11,139,167,73,71,313,53,3,43,431,7,227,1021,1097,43,149,

%T 811,3413,163,1571,2551,1607,331,1061,991,47,1783,1217,223,3251,853,

%U 797,181,4679,337,6779,6793,1811,211,251,619,1283,811,6047,193,443,12853

%N Beginning with 2, least new prime such that the concatenation a(n), a(n-1), ...a(2), a(1), a(2), ...a(n) is prime.

%Y Cf. A090565.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Dec 11 2003

%E Extended by _Max Alekseyev_, Mar 09 2009