id:A102631 - OEIS Search Results

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n^2 / (squarefree kernel of n).

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1, 2, 3, 8, 5, 6, 7, 32, 27, 10, 11, 24, 13, 14, 15, 128, 17, 54, 19, 40, 21, 22, 23, 96, 125, 26, 243, 56, 29, 30, 31, 512, 33, 34, 35, 216, 37, 38, 39, 160, 41, 42, 43, 88, 135, 46, 47, 384, 343, 250, 51, 104, 53, 486, 55, 224, 57, 58, 59, 120, 61, 62, 189, 2048, 65, 66, 67 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A000290(n)/A007947(n) = n*A003557(n);` `a(n)=n iff n is squarefree: a(A005117(n))=A005117(n).` `Index of first occurrence of n in A019554. - Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Nov 17 2006`
	FORMULA	`Multiplicative with a(p^e) = p^{2e-1}. - Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Nov 17 2006`
	CROSSREFS	`Cf. A000290, A007947, A003557, A005117, A019554.` `Adjacent sequences: A102628 A102629 A102630 this_sequence A102632 A102633 A102634` `Sequence in context: A110340 A138682 A065632 this_sequence A100782 A089489 A114340`
	KEYWORD	`nonn,mult`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 25 2005`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

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