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A069659
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Largest n-digit perfect power.
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1
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9, 81, 961, 9801, 99856, 998001, 9998244, 99980001, 999950884, 9999800001, 99999515529, 999998000001, 9999995824729, 99999980000001, 999999961946176, 9999999800000001, 99999999989350756, 999999998000000001
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Are there terms which are not perfect squares? In other words, when (if ever) does this differ from A061433.
Trivially, 81 is both a square and a fourth power. Assuming my program works, there are no differences in the first 1500 terms. - Hans Havermann, Aug 06 2006
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CROSSREFS
| Cf. A061433.
Sequence in context: A068881 A104266 A061433 * A110853 A167723 A203107
Adjacent sequences: A069656 A069657 A069658 * A069660 A069661 A069662
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KEYWORD
| nonn,base
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 04 2002
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EXTENSIONS
| More terms from Ryan Propper (rpropper(AT)stanford.edu), Oct 10 2005
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