id:A078321 - OEIS Search Results

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Euler's totient of n*sfk(n)+1, where sfk=A007947 (square-free kernel).

+0
2

1, 4, 4, 6, 12, 36, 20, 16, 12, 100, 60, 72, 64, 196, 112, 20, 112, 108, 180, 132, 192, 384, 208, 112, 36, 676, 40, 260, 420, 832, 432, 48, 432, 1056, 612, 180, 544, 1088, 760, 400, 812, 1408, 720, 576, 312, 2016, 768, 272, 168, 332, 1300, 800, 1120, 240 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n)=A000010(A078310(n)).`
	CROSSREFS	`Sequence in context: A163976 A054223 A160643 this_sequence A128089 A019176 A158661` `Adjacent sequences: A078318 A078319 A078320 this_sequence A078322 A078323 A078324`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 23 2002`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research