id:A075857 - OEIS Search Results

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Least common multiple of totient and cototient of n.

+0
1

0, 1, 2, 2, 4, 4, 6, 4, 6, 12, 10, 8, 12, 24, 56, 8, 16, 12, 18, 24, 36, 60, 22, 16, 20, 84, 18, 48, 28, 88, 30, 16, 260, 144, 264, 24, 36, 180, 120, 48, 40, 60, 42, 120, 168, 264, 46, 32, 42, 60, 608, 168, 52, 36, 120, 96, 252, 420, 58, 176, 60, 480, 108, 32, 816, 460, 66 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = A000010(n)*A051953(n)/A009195(n).`
	CROSSREFS	`Sequence in context: A128923 A153835 A171462 this_sequence A023817 A145392 A034974` `Adjacent sequences: A075854 A075855 A075856 this_sequence A075858 A075859 A075860`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 15 2002`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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