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Search: id:A072712
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| A072712 |
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Numbers n such that n divides the (right) concatenation of all numbers from 1 to n written in base 10 (most significant digit on left) where n is prime only. |
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+0
1
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OFFSET
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1,1
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COMMENT
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Right concatenation, normal order.
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EXAMPLE
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n=17 is not a term since 1234567891011121314151617 is not divisible by 17
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CROSSREFS
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Cf. A029447-A029470, A029471-A029494, A029495-A029518, A029519-A029542, A061931-A061954, A061955-A061978.
Sequence in context: A056146 A115835 A089678 this_sequence A046476 A141186 A143712
Adjacent sequences: A072709 A072710 A072711 this_sequence A072713 A072714 A072715
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KEYWORD
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base,more,nonn
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AUTHOR
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Jeff Heleen (meriaden(AT)hotmail.com), Aug 07 2002
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EXTENSIONS
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Another term from Jeff Heleen (meriaden(AT)hotmail.com), Oct 11 2009
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