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%I
%S 7,16638,3631421,141521639,3087218304
%N Numbers k such that the concatenation of k with the k-th prime gives a palindrome.
%e prime(3087218304)=74038127803 and 308721830474038127803 is a palindrome.
%Y Cf. A109304, A115996.
%K nonn,base
%O 1,1
%A _Giovanni Resta_, Feb 13 2006
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