id:A037143 - OEIS Search Results

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Numbers with at most 2 prime factors (counted with multiplicity).

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11

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	OFFSET	`1,2`
	COMMENT	`A001222(a(n)) <= 2; A054576(a(n)) = 1. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 10 2006`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 1..1000`
	CROSSREFS	`Union of A008578 and A001358. Complement of A033942. Cf. A063928.` `A101040(a(n))=1 for n>1.` `A139690 is a subsequence.` `Sequence in context: A166155 A063538 A167207 this_sequence A048627 A152757 A062462` `Adjacent sequences: A037140 A037141 A037142 this_sequence A037144 A037145 A037146`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Henry Bottomley (se16(AT)btinternet.com), Aug 15 2001`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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