id:A098904 - OEIS Search Results

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Even numbers whose number of distinct prime factors is odd.

+0
1

2, 4, 8, 16, 30, 32, 42, 60, 64, 66, 70, 78, 84, 90, 102, 110, 114, 120, 126, 128, 130, 132, 138, 140, 150, 154, 156, 168, 170, 174, 180, 182, 186, 190, 198, 204, 220, 222, 228, 230, 234, 238, 240, 246, 252, 256, 258, 260, 264, 266, 270, 276, 280, 282, 286, 290 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`30 is a member of sequence because 30 is even and number of distinct prime factors of 30 i.e. 3 is odd.`
	CROSSREFS	`Cf. A001221.` `Sequence in context: A085583 A054154 A018469 this_sequence A046127 A075529 A005305` `Adjacent sequences: A098901 A098902 A098903 this_sequence A098905 A098906 A098907`
	KEYWORD	`easy,nonn`
	AUTHOR	`Shyam Sunder Gupta (guptass(AT)rediffmail.com), Oct 14 2004`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research