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Search: id:A063566
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| A063566 |
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3^a(n) = smallest positive power of 3 having n in its decimal representation. |
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+0
2
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| 10, 4, 3, 1, 5, 8, 8, 3, 4, 2, 21, 19, 17, 22, 11, 13, 17, 11, 7, 9, 18, 7, 19, 13, 5, 26, 19, 3, 24, 6, 16, 12, 13, 31, 15, 21, 24, 29, 18, 31, 17, 12, 18, 5, 12, 28, 16, 11, 15, 10, 35
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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a(7) = 15 because 2^15 = 32768.
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MATHEMATICA
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a = {}; Do[k = 1; While[ StringPosition[ ToString[3^k], ToString[n] ] == {}, k++ ]; a = Append[a, k], {n, 0, 50} ]; a
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CROSSREFS
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Essentially the same as A062520.
Sequence in context: A065194 A113315 A081986 this_sequence A153690 A018811 A100844
Adjacent sequences: A063563 A063564 A063565 this_sequence A063567 A063568 A063569
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KEYWORD
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base,nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Aug 10 2001
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