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A132349 If n is a k-th power with k >= 2 then a(n) = k, otherwise a(n) = 0. 3
0, 0, 0, 2, 0, 0, 0, 3, 2, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 3, 0, 0, 0, 0, 5, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

PROG

(PARI) r(n) = for(j=1, n, print1(ispower(j)", ")); r(100)

CROSSREFS

Cf. A132384-A132352.

Sequence in context: A327172 A113503 A082507 * A216226 A123391 A212172

Adjacent sequences:  A132346 A132347 A132348 * A132350 A132351 A132352

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 11 2007

STATUS

approved

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Last modified June 19 15:47 EDT 2021. Contains 345142 sequences. (Running on oeis4.)