id:A067028 - OEIS Search Results

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Numbers with a composite number of prime factors (counted with multiplicity).

+0
3

16, 24, 36, 40, 54, 56, 60, 64, 81, 84, 88, 90, 96, 100, 104, 126, 132, 135, 136, 140, 144, 150, 152, 156, 160, 184, 189, 196, 198, 204, 210, 216, 220, 224, 225, 228, 232, 234, 240, 248, 250, 256, 260, 276, 294, 296, 297, 306, 308, 315, 324, 328, 330, 336 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)=16, 16 has 4 prime factors (counted with multiplicity) and 4 is composite.`
	CROSSREFS	`Cf. A063989.` `Sequence in context: A163284 A100316 A036328 this_sequence A110893 A014613 A046370` `Adjacent sequences: A067025 A067026 A067027 this_sequence A067029 A067030 A067031`
	KEYWORD	`nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Feb 16 2002`

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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