id:A121048 - OEIS Search Results

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n + phi(n), for Euler totient function phi(n).

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2, 3, 5, 6, 9, 8, 13, 12, 15, 14, 21, 16, 25, 20, 23, 24, 33, 24, 37, 28, 33, 32, 45, 32, 45, 38, 45, 40, 57, 38, 61, 48, 53, 50, 59, 48, 73, 56, 63, 56, 81, 54, 85, 64, 69, 68, 93, 64, 91, 70, 83, 76, 105, 72, 95, 80, 93, 86, 117, 76, 121, 92, 99, 96, 113, 86, 133, 100, 113 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = n + phi(n) = n + A000010(n).`
	MATHEMATICA	`n + EulerPhi[n]`
	CROSSREFS	`Cf. A000010, A000040, A050530, A051953, A068080.` `Adjacent sequences: A121045 A121046 A121047 this_sequence A121049 A121050 A121051` `Sequence in context: A098211 A073673 A118809 this_sequence A075389 A053784 A036697`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost2(AT)yahoo.com), Aug 08 2006`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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