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%I A113493 #10 Oct 03 2021 15:41:19
%S A113493 2,3,5,7,1,1,1,0,1,1,3,1,1,5,1,1,8,1,1,9,1,3,1,3,3,5,3,3,7,3,3,8,3,7,
%T A113493 2,7,7,5,7,7,8,7,7,9,7,9,1,9,9,2,9,1,0,3,0,1,1,0,5,0,1,1,0,6,0,1,1,1,
%U A113493 3,1,1,1,1,4,1,1,1,2,4,2,1,1,2,7,2,1,1,2,8,2,1,1,3,3,3,1,1,3,8,3,1,1,3,9,3
%N A113493 Digits of the concatenation of the first palindromic primes.
%H A113493 Harvey P. Dale, <a href="/A113493/b113493.txt">Table of n, a(n) for n = 1..1000</a>
%e A113493 The sequence of palindromic primes (A002385) begins with 2, 3, 5, 7, 11, 101, 131, 151, 181, 191, 313, 353, 373, 383, 727, 757, 787, 797, ...; concatenating them gives the digit string 235711101131151181191313353373383727757787797..., whose digits are the terms of this sequence.
%t A113493 Flatten[IntegerDigits/@Select[Prime[Range[3000]],PalindromeQ]] (* _Harvey P. Dale_, Oct 03 2021 *)
%Y A113493 Cf. A002385.
%K A113493 base,easy,nonn
%O A113493 1,1
%A A113493 _Giovanni Teofilatto_, Jan 10 2006
%E A113493 Edited by _Jon E. Schoenfield_, May 07 2021

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