id:A081303 - OEIS Search Results

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gpf(m) - 2*spf(m), where gpf(m) is the greatest and spf(m) is the smallest prime factor of m (A006530, A020639).

+0
5

-1, -2, -3, -2, -5, -1, -7, -2, -3, 1, -11, -1, -13, 3, -1, -2, -17, -1, -19, 1, 1, 7, -23, -1, -5, 9, -3, 3, -29, 1, -31, -2, 5, 13, -3, -1, -37, 15, 7, 1, -41, 3, -43, 7, -1, 19, -47, -1, -7, 1, 11, 9, -53, -1, 1, 3, 13, 25, -59, 1, -61, 27, 1, -2, 3, 7, -67, 13, 17, 3, -71, -1, -73, 33, -1, 15 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A046665, A081304, A081305, A081306, A069900.` `Sequence in context: A099635 A086847 A098228 this_sequence A127705 A053139 A124386` `Adjacent sequences: A081300 A081301 A081302 this_sequence A081304 A081305 A081306`
	KEYWORD	`sign`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 17 2003`

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

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