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A072816
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a(n) is the smallest integer such that the mantissa of 1/a(n) contains n.
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0
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1, 4, 3, 7, 2, 6, 7, 7, 11, 19, 9, 8, 23, 7, 19, 6, 17, 49, 21, 29, 19, 31, 13, 29, 4, 19, 29, 7, 17, 13, 19, 31, 3, 23, 17, 19, 27, 26, 23, 47, 17, 7, 23, 29, 22, 26, 17, 29, 51, 59, 29, 17, 26, 22, 18, 23, 7, 17, 47, 23, 21, 16, 19, 17, 23, 6, 49, 19, 13, 17, 7, 29, 19, 47, 29, 13
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| 1/a(n) must contain also at least one nonzero digit after n if n ends with 0; e.g., a(10)=19 because 19 is the smallest integer whose reciprocal (0.052631578947368421052...) contains the digits "10" followed by at least one nonzero digit (to avoid 1/10 = 0.1000...)
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EXAMPLE
| 11 is the smallest integer whose reciprocal (0.0909...) contains 9, hence a(9) = 11
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CROSSREFS
| Sequence in context: A077955 A077978 A192986 * A046548 A127752 A198874
Adjacent sequences: A072813 A072814 A072815 * A072817 A072818 A072819
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KEYWORD
| base,nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Aug 09 2002
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EXTENSIONS
| Corrected, edited, and more terms added by Jon E. Schoenfield (jonscho(AT)hiwaay.net), May 08 2010
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