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Search: id:A110435
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| A110435 |
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Beginning with 11, least number such that every partial concatenation is a prime. |
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1
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| 11, 3, 11, 1, 3, 3, 53, 13, 39, 9, 3, 21, 53, 79, 11, 19, 59, 27, 49, 21, 23, 211, 153, 189, 3, 161, 121, 167, 183, 193, 77, 21, 349, 107, 129, 343, 119, 241, 143, 37, 77, 31, 159, 183, 531, 1517, 7, 59, 159, 123, 9, 1513, 203, 343, 59, 9, 999
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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As n tends to infinity, does everyy term in A045572 arise infinitely many often and with same frequency? - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 05 2006
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FORMULA
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a(n)=A092528(n+1), n>1. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 18 2008]
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EXAMPLE
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11,113,11311,113111,1131113,11311133 are all prime.
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CROSSREFS
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Sequence in context: A082626 A083968 A082769 this_sequence A110774 A067063 A075023
Adjacent sequences: A110432 A110433 A110434 this_sequence A110436 A110437 A110438
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 03 2005
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 05 2006
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