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%I A155032 #9 Feb 16 2021 01:02:36
%S A155032 3,59,83,179,283,353,431,709,1433,2269,2381,3559,3593,4153,5503,6899,
%T A155032 7109,7351,7649,8513,11909,13297,14107,14437,14591,16073,16127,16451,
%U A155032 16901,17117,17539,17987,18149,19777,20759,21317,22027,24439,25357,26783,27437,29269,30253,32299,34057,34259,34421,34543,35617,36307,37049
%N A155032 Primes p such that the concatenation of pi(p) and p is prime, where pi is the prime counting function.
%e A155032 Since 3 is the second prime number and the concatenation of 2 and 3 gives 23, which is prime, 3 is in the sequence.
%e A155032 Since 59 is the seventeenth prime and the concatenation of 17 and 59 gives 1759, another prime, 59 is also in the sequence.
%t A155032 (* First run the program given for A154963 *) Prime[A154963]
%Y A155032 pi(a(n)) = A154963(n).
%K A155032 nonn,base
%O A155032 1,1
%A A155032 _Juri-Stepan Gerasimov_, Jan 19 2009
%E A155032 Edited and extended beyond a(3) by _Alonso del Arte_, Jan 20 2009, with thanks to _Klaus Brockhaus_'s edit of A154963

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