A084371 - OEIS

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A084371

Squarefree kernels of powerful numbers (A001694).

1, 2, 2, 3, 2, 5, 3, 2, 6, 7, 2, 6, 3, 10, 6, 11, 5, 2, 6, 13, 14, 10, 6, 15, 3, 2, 6, 17, 6, 7, 19, 14, 10, 6, 21, 22, 10, 2, 23, 6, 5, 6, 15, 26, 3, 14, 10, 29, 6, 30, 31, 22, 6, 10, 2, 33, 15, 6, 34, 35, 6, 21, 11, 26, 37, 14, 38, 39, 14, 10, 41, 6, 42, 30, 43, 22, 6, 10 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(n) = A007947(A001694(n)).`
	EXAMPLE	`A001694(11) = 64 = 2^6 -> a(11) = 2,` `A001694(12) = 72 = 2^3 * 3^2 -> a(12) = 2*3 = 6,` `A001694(13) = 81 = 3^4 -> a(13) = 3.`
	CROSSREFS	`Sequence in context: A076403 A157987 A025478 * A025476 A078773 A151663` `Adjacent sequences: A084368 A084369 A084370 * A084372 A084373 A084374`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 23 2003`

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Last modified February 13 16:17 EST 2012. Contains 205522 sequences.