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A076403 Square-free kernel of n-th perfect power. +0
3
1, 2, 2, 3, 2, 5, 3, 2, 6, 7, 2, 3, 10, 11, 5, 2, 6, 13, 14, 6, 15, 3, 2, 17, 6, 7, 19, 10, 21, 22, 2, 23, 6, 5, 26, 3, 14, 29, 30, 31, 10, 2, 33, 34, 35, 6, 11, 37, 38, 39, 10, 41, 6, 42, 43, 22, 15, 2, 46, 3, 13, 47, 6, 7, 10, 51, 26, 14, 53, 6, 55, 5, 14, 57, 58, 15, 59, 30, 61, 62 (list; graph; listen)
OFFSET

1,2

COMMENT

a(n) = A007947(A025478(n)).

LINKS

Eric Weisstein's World of Mathematics, Perfect Powers.

Eric Weisstein's World of Mathematics, Squarefree Part.

FORMULA

A007947(A001597(n)).

CROSSREFS

Sequence in context: A118136 A076396 A076397 this_sequence A157987 A025478 A084371

Adjacent sequences: A076400 A076401 A076402 this_sequence A076404 A076405 A076406

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 09 2002

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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.


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