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A019555
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Smallest number whose cube is divisible by n.
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9
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1, 2, 3, 2, 5, 6, 7, 2, 3, 10, 11, 6, 13, 14, 15, 4, 17, 6, 19, 10, 21, 22, 23, 6, 5, 26, 3, 14, 29, 30, 31, 4, 33, 34, 35, 6, 37, 38, 39, 10, 41, 42, 43, 22, 15, 46, 47, 12, 7, 10, 51, 26, 53, 6, 55, 14, 57, 58, 59, 30, 61, 62, 21, 4, 65, 66, 67, 34, 69, 70, 71, 6, 73, 74, 15, 38, 77, 78
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| F. Smarandache, "Collected Papers", Vol. II, Tempus Publ. Hse, Bucharest, 1996.
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LINKS
| H. Bottomley, Some Smarandache-type multiplicative sequences
M. L. Perez et al., eds., Smarandache Notions Journal
F. Smarandache, Collected Papers, Vol. II
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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FORMULA
| Replace any cubic factors in n by their cube roots.
Multiplicative with a(p^e) = p^ceil(e/3). - R. J. Mathar, May 29 2011
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MATHEMATICA
| cubes=Range[85]^3; Table[Position[Divisible[cubes, i], True, 1, 1][[1, 1]], {i, 85}] [From Harvey P. Dale, Jan. 12, 2011]
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CROSSREFS
| a(n)=n/A000189(n). Cf. A019554, A015050.
Sequence in context: A015052 A053166 A166140 * A052410 A175781 A072775
Adjacent sequences: A019552 A019553 A019554 * A019556 A019557 A019558
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KEYWORD
| nonn,easy,mult
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AUTHOR
| R. Muller
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EXTENSIONS
| Corrected and extended by David W. Wilson.
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