id:A074763 - OEIS Search Results

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1/n*Sum_{d divides n} (-1)^(n+d)*phi(n/d)*2^d.

+0
1

2, 1, 4, 4, 8, 10, 20, 34, 60, 100, 188, 348, 632, 1162, 2192, 4114, 7712, 14542, 27596, 52480, 99880, 190558, 364724, 699248, 1342184, 2580796, 4971068, 9587560, 18512792, 35790376, 69273668, 134219794, 260301176, 505286416, 981706832 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. A000010, A000031, A038063.` `Sequence in context: A077967 A008312 A060723 this_sequence A099932 A008346 A119282` `Adjacent sequences: A074760 A074761 A074762 this_sequence A074764 A074765 A074766`
	KEYWORD	`nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)eunet.rs), Sep 06 2002`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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