A057434 - OEIS

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A057434

Sum_{k=1..n} phi(k)^2.

1, 2, 6, 10, 26, 30, 66, 82, 118, 134, 234, 250, 394, 430, 494, 558, 814, 850, 1174, 1238, 1382, 1482, 1966, 2030, 2430, 2574, 2898, 3042, 3826, 3890, 4790, 5046, 5446, 5702, 6278, 6422, 7718, 8042, 8618, 8874, 10474, 10618, 12382, 12782 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Partial sums of A127473. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 29 2008]`
	FORMULA	`Asymptotically : a(n)=C*n^3 with C=0.14275... - Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 14 2002`
	CROSSREFS	`Cf. A000010.` `Sequence in context: A104142 A079713 A055237 * A162581 A061547 A190034` `Adjacent sequences: A057431 A057432 A057433 * A057435 A057436 A057437`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Sep 08 2000`

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Last modified February 14 05:53 EST 2012. Contains 205570 sequences.