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A069659 Largest n-digit perfect power. 1
9, 81, 961, 9801, 99856, 998001, 9998244, 99980001, 999950884, 9999800001, 99999515529, 999998000001, 9999995824729, 99999980000001, 999999961946176, 9999999800000001, 99999999989350756, 999999998000000001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

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

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Cf. A061433.

Sequence in context: A068881 A104266 A061433 * A271556 A110853 A344402

Adjacent sequences:  A069656 A069657 A069658 * A069660 A069661 A069662

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 04 2002

EXTENSIONS

More terms from Ryan Propper, Oct 10 2005

STATUS

approved

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Last modified October 26 14:28 EDT 2021. Contains 348267 sequences. (Running on oeis4.)