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Search: id:A085083
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| A085083 |
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Index of the first occurrence of n in A085082. Smallest number having divisors with n distinct prime signatures. |
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+0
1
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| 1, 2, 4, 8, 12, 32, 24, 128, 48, 120, 96, 144, 192, 360, 288, 480, 768, 576, 720, 2592, 1152, 1728, 2160, 1440, 3840, 3456, 4608, 7200, 2880, 4320, 15360, 15120, 10080, 5760, 20736, 36864, 8640, 27648, 11520, 20160, 50400, 30240, 25920, 17280, 82944
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OFFSET
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1,2
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EXAMPLE
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a(5) = 12, the divisors of 12 are 1,2,3,4,6 and 12 and the five distinct prime signatures arising are 1, p, p*q, p^2 and p^2*q.
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CROSSREFS
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Cf. A085082.
Sequence in context: A058771 A036493 A082906 this_sequence A076745 A007374 A105207
Adjacent sequences: A085080 A085081 A085082 this_sequence A085084 A085085 A085086
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 01 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Jan 25 2005
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