id:A067548 - OEIS Search Results

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Least k > n such that gcd(prime(n)+k, n+prime(k)) > 1.

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2, 6, 5, 5, 7, 17, 9, 11, 11, 13, 13, 23, 15, 26, 17, 17, 19, 19, 20, 22, 22, 23, 25, 26, 26, 29, 29, 33, 31, 41, 32, 34, 35, 35, 37, 54, 38, 44, 41, 43, 43, 44, 45, 47, 47, 53, 49, 96, 51, 53, 52, 55, 55, 64, 57, 57, 59, 59, 61, 91, 62, 67 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(2)=6 as: gcd(prime(2)+6,2+prime(6)) = gcd(3+6,2+13) =` `gcd(9,15) = 3 and gcd(prime(2)+k,2+prime(k))=1 for 2<k<6.`
	CROSSREFS	`Sequence in context: A021381 A157890 A105029 this_sequence A053793 A076187 A019655` `Adjacent sequences: A067545 A067546 A067547 this_sequence A067549 A067550 A067551`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 28, 2002`

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

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