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A116486
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Numbers n such that both n and n+1 are logarithmically smooth.
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3
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8, 24, 80, 125, 224, 2400, 3024, 4224, 4374, 6655, 9800, 10647, 123200, 194480, 336140, 601425, 633555, 709631, 5142500, 5909760, 11859210, 1611308699
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| N is logarithmically smooth if its largest prime factor is not more than ceiling(log2(n)).
Is the sequence finite?
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LINKS
| More information
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EXAMPLE
| 125 is there because 125=5*5*5, 126=2*3*3*7; no prime factor is greater than ceiling(log2(125))=7.
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CROSSREFS
| Sequence in context: A083583 A005051 A078158 * A179609 A141317 A146534
Adjacent sequences: A116483 A116484 A116485 * A116487 A116488 A116489
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KEYWORD
| nonn
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AUTHOR
| Harsh R. Aggarwal (harsh251(AT)yahoo.com), Mar 20 2006
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EXTENSIONS
| Edited by Don Reble (djr(AT)nk.ca), Apr 07 2006
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