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Search: id:A110804
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| A110804 |
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a(1) =10, a(n) = a(n-1) times the number of digits in a(n-1). |
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+0
1
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| 10, 20, 40, 80, 160, 480, 1440, 5760, 23040, 115200, 691200, 4147200, 29030400, 232243200, 2090188800
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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For every n there is a least number k such that n! divides a(m) for all m > k. Subsidiary sequence: least k such that n! divides a(k).
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EXAMPLE
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Next term after 160 is 160*3 =480.
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CROSSREFS
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Sequence in context: A114931 A013978 A053162 this_sequence A048063 A007927 A160517
Adjacent sequences: A110801 A110802 A110803 this_sequence A110805 A110806 A110807
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Aug 14 2005
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