id:A112550 - OEIS Search Results

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Define a(1)=41; then a(n)=k*a(n-1)^2-1 with k least number such that a(n) and a(n)+2 are twin primes.

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41, 282407, 99054112352057, 29847243642863658530046303259457, 438302112913620818033722039251417607232953642602702120391887945707 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`168*41^2-1=282407, 282407 and 282409 are twin primes so a(2)=282407`
	CROSSREFS	`See k sequence in A112551` `Sequence in context: A106203 A084275 A078813 this_sequence A114927 A087512 A125194` `Adjacent sequences: A112547 A112548 A112549 this_sequence A112551 A112552 A112553`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Sep 13 2005`

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.

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