id:A091373 - OEIS Search Results

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Number of numbers <= n having exactly as many prime factors as the value of their smallest prime factor.

+0
5

0, 0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`a(n) = #{m: A001222(m)=A020639(m), m<=n};` `A091372(n) + a(n) + A091374(n) = n.`
	CROSSREFS	`Cf. A091376, A091371.` `Sequence in context: A108037 A055679 A056172 this_sequence A008621 A002265 A110655` `Adjacent sequences: A091370 A091371 A091372 this_sequence A091374 A091375 A091376`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jan 04 2004`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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