id:A096533 - OEIS Search Results

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Number of composite numbers not greater than the n-th composite number that divide at least one other number not greater than the n-th composite number.

+0
2

0, 0, 1, 1, 1, 2, 2, 2, 3, 4, 5, 5, 5, 6, 6, 6, 6, 7, 8, 9, 9, 9, 9, 10, 10, 10, 11, 12, 13, 13, 13, 14, 14, 15, 15, 16, 17, 17, 18, 18, 18, 19, 19, 19, 20, 20, 21, 22, 22, 23, 24, 24, 24, 25, 25, 26, 27, 27, 27, 28, 28, 28, 28, 29, 30, 30, 31, 31, 31, 31, 32, 33, 33, 34, 35, 36 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`a(n) = A065855(floor(A002808(n)/2));` `A096532(n) + a(n) = n.`
	CROSSREFS	`Sequence in context: A055224 A126295 A162352 this_sequence A029096 A076872 A008906` `Adjacent sequences: A096530 A096531 A096532 this_sequence A096534 A096535 A096536`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 23 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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