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A113493
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Digits of the concatenation of the first palindromic primes.
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1
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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, 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, 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
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OFFSET
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1,1
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LINKS
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EXAMPLE
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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.
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MATHEMATICA
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Flatten[IntegerDigits/@Select[Prime[Range[3000]], PalindromeQ]] (* Harvey P. Dale, Oct 03 2021 *)
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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