id:A166362 - OEIS Search Results

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phi(nonprime(n)).

+0
1

1, 2, 2, 4, 6, 4, 4, 6, 8, 8, 6, 8, 12, 10, 8, 20, 12, 18, 12, 8, 16, 20, 16, 24, 12, 18, 24, 16, 12, 20, 24, 22, 16, 42, 20, 32, 24, 18, 40, 24, 36, 28, 16, 30, 36, 32, 48, 20, 32, 44, 24, 24, 36, 40, 36, 60, 24, 32, 54, 40, 24, 64, 42, 56, 40, 24, 72, 44, 60, 46, 72, 32, 42, 60 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Here 1, 4, 6, 8, 9, 10, 12, 14, 15, 16,.. are the nonprimes A018252. Or, unit together with EulerPhi of n-th composite number (i.e.A073256).`
	CROSSREFS	`Cf. A000010, A073256, A018252.` `Sequence in context: A115068 A051495 A073256 this_sequence A050469 A085730 A089002` `Adjacent sequences: A166359 A166360 A166361 this_sequence A166363 A166364 A166365`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Oct 12 2009`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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