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A113695
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a(1) = 1, a(2) = 2 then the least number starting with n so that every term divides the concatenation of its neighbors.
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1
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1, 2, 30, 40, 520, 6120, 75080, 821920, 9125440, 1012882880, 11690270720, 127219466240, 1377297694720, 14982604718080, 1512710259671040, 16662943738757120, 178381140013219840, 18013061754595573760
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| a(2)=2 divides the concatenated a(1)a(3)=130. a(3)=30 divides the concatenated a(2)a(4)=240. a(4)=40 divides the concatenated a(3)a(5)=30520.
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CROSSREFS
| Cf. A113696.
Sequence in context: A145290 A127026 A105962 * A098827 A184238 A078208
Adjacent sequences: A113692 A113693 A113694 * A113696 A113697 A113698
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 11 2005
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EXTENSIONS
| Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 31 2007
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