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A083804
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a(1) = 1. If the (n-1)th partial concatenation is divisible by n then a(n) = 0. Otherwise, a(n) is the smallest positive number such that the n-th partial concatenation is divisible by n.
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1
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1, 2, 0, 0, 0, 0, 3, 2, 1, 10, 0, 8, 16, 8, 15, 20, 9, 4, 24, 20, 13, 28, 25, 28, 25, 30, 32, 20, 9, 10, 27, 2, 16, 10, 5, 36, 26, 10, 33, 20, 33, 46, 26, 28, 30, 50, 4, 48, 13, 50, 3, 12, 12, 6, 30, 64, 53, 56, 61, 60, 69, 36, 12, 8, 65, 74, 66, 4, 44, 20, 3, 76, 31, 62, 75, 6, 85, 56
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| 1,12,120,1200,12000,120000 1200003 etc. are multiples of 1,2,3,4,5,6 and 7 respectively.
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CROSSREFS
| Cf. A083805.
Cf. A051883, A073894, A099552.
Sequence in context: A112167 A037213 A092197 * A028597 A028617 A006792
Adjacent sequences: A083801 A083802 A083803 * A083805 A083806 A083807
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KEYWORD
| base,easy,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 08 2003
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EXTENSIONS
| Corrected and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Nov 30 2004
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