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A111450 Least perfect power ending in n. 0 if no perfect power ends in n. e.g. a(10) = a(15) = 0. 0
1, 32, 243, 4, 25, 16, 27, 8, 9, 0, 357911, 512, 4913, 0, 0, 16, 389017, 0, 59319, 0, 121, 0, 103823, 324, 25, 0, 27, 128, 529, 0, 1331, 32, 456533, 0, 0, 36, 35937, 0, 493039, 0, 441, 0, 243, 144, 0, 0, 177147, 2048, 49, 0, 132651, 21952, 50653, 0, 0, 256, 804357, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(10^n) =0 = a(10k+5),if 10k + 5 is not==0 (mod 25). Are there any other numbers r such that a(r) =0?

LINKS

Table of n, a(n) for n=1..58.

EXAMPLE

a(14) = 0 because any number ending in 14 is even but not divisible by 4 and any even power is divisible by 4. [From David Wasserman, Jan 15 2009]

CROSSREFS

Sequence in context: A060622 A118999 A321829 * A070332 A111442 A104782

Adjacent sequences:  A111447 A111448 A111449 * A111451 A111452 A111453

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Aug 03 2005

EXTENSIONS

Corrected and extended by David Wasserman, Jan 15 2009

STATUS

approved

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Last modified September 18 16:24 EDT 2021. Contains 347528 sequences. (Running on oeis4.)