id:A110559 - OEIS Search Results

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Least j such that j*n^2 -1 and j*n^2 +1 are twin primes.

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4, 1, 2, 12, 6, 2, 18, 3, 10, 6, 12, 3, 12, 18, 18, 57, 12, 5, 120, 12, 2, 3, 132, 2, 42, 3, 58, 45, 12, 7, 72, 15, 10, 3, 6, 2, 60, 30, 12, 3, 168, 2, 192, 18, 2, 33, 48, 10, 138, 39, 8, 63, 42, 22, 60, 42, 32, 3, 120, 6, 90, 18, 40, 165, 204, 7, 90, 18, 70, 6, 72, 27, 30, 15, 6, 18 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`1244-1=191, 191 and 193 are twin primes so j(4)=12.`
	CROSSREFS	`Sequence in context: A128078 A084604 A024569 this_sequence A030441 A072033 A004161` `Adjacent sequences: A110556 A110557 A110558 this_sequence A110560 A110561 A110562`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Sep 12 2005`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Sep 15 2005`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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