id:A119432 - OEIS Search Results

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A119432

Numbers such that 2*phi(n) <= n.

+0
3

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 105, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Equivalently, totient(n) <= cototient(n).`
	FORMULA	`Elements of A054741 together with all 2^n for n>0.`
	CROSSREFS	`Cf. A000010, A119434.` `Sequence in context: A055966 A087113 A004275 this_sequence A005843 A076032 A004277` `Adjacent sequences: A119429 A119430 A119431 this_sequence A119433 A119434 A119435`
	KEYWORD	`nonn`
	AUTHOR	`Frank Adams-Watters (FrankTAW(AT)Netscape.net), May 19 2006`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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