id:A046470 - OEIS Search Results

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Even numbers with an odd number of prime factors (counted with multiplicity).

+0
3

2, 8, 12, 18, 20, 28, 30, 32, 42, 44, 48, 50, 52, 66, 68, 70, 72, 76, 78, 80, 92, 98, 102, 108, 110, 112, 114, 116, 120, 124, 128, 130, 138, 148, 154, 162, 164, 168, 170, 172, 174, 176, 180, 182, 186, 188, 190, 192, 200, 208, 212, 222, 230, 236, 238, 242, 244 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(2)=8, which is even with odd number of prime factors i.e. 3.`
	CROSSREFS	`Cf. A046337.` `Adjacent sequences: A046467 A046468 A046469 this_sequence A046471 A046472 A046473` `Sequence in context: A108059 A067884 A005880 this_sequence A090772 A057265 A046525`
	KEYWORD	`nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 16 2002`

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

AT&T Labs Research