id:A166719 - OEIS Search Results

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Numbers with at most 5 prime factors (counted with multiplicity)

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	OFFSET	`1,2`
	COMMENT	`Complement of A046305, A001222(a(n))<=5`
	EXAMPLE	`50 = 255 is in the sequence since it has 3 prime factors and 3 <= 5` `64 = 22222*2 is not in the sequence since it has 6 prime factors`
	PROGRAM	`(PARI) isA166719(n) = (bigomega(n) <= 5)`
	CROSSREFS	`Cf. A046305, A001222` `For numbers with at most n prime factors: n=1: A000040, n=2: A037143, n=3: A037144, n=4: A166718` `Sequence in context: A130696 A146297 A144972 this_sequence A085736 A055643 A122079` `Adjacent sequences: A166716 A166717 A166718 this_sequence A166720 A166721 A166722`
	KEYWORD	`easy,nonn`
	AUTHOR	`Michael Porter (michael_b_porter(AT)yahoo.com), Oct 20 2009`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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