id:A074594 - OEIS Search Results

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Number of distinct prime factors of numbers that are not prime powers.

+0
4

2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 3, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 2, 3, 2, 3, 3, 2, 2, 2, 2, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 2, 2, 3, 2 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = A001221(A024619(n)).`
	CROSSREFS	`Cf. A074595, A074592, A074593.` `Sequence in context: A135663 A090620 A057467 this_sequence A001069 A110591 A105209` `Adjacent sequences: A074591 A074592 A074593 this_sequence A074595 A074596 A074597`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 25 2002`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

AT&T Labs Research