id:A112745 - OEIS Search Results

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Least k such that 6*k*p(n)^2 +1 is prime, where p(i)=i-th prime.

+0
3

3, 2, 1, 3, 1, 2, 2, 5, 4, 2, 3, 8, 2, 2, 4, 7, 1, 8, 3, 2, 2, 1, 13, 1, 2, 10, 5, 3, 1, 4, 2, 1, 9, 3, 5, 2, 14, 3, 9, 3, 3, 10, 1, 5, 4, 1, 2, 2, 2, 6, 3, 2, 1, 10, 5, 7, 1, 3, 10, 6, 2, 7, 7, 8, 5, 3, 3, 3, 2, 6, 12, 1, 2, 3, 12, 4, 1, 3, 5, 6, 2, 2, 1, 3, 1, 3, 3, 4, 2, 14, 7, 26, 9, 2, 12, 3, 5, 5, 7, 6 (list; graph; listen)

	OFFSET	`1,1`
	MATHEMATICA	`Table[k = 1; While[ ! PrimeQ[6kPrime[n]^2 + 1], k++ ]; k, {n, 100}] (Chandler)`
	CROSSREFS	`Cf. A112744, A112746.` `Sequence in context: A127318 A085068 A079587 this_sequence A036585 A164848 A130827` `Adjacent sequences: A112742 A112743 A112744 this_sequence A112746 A112747 A112748`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Sep 18 2005`
	EXTENSIONS	`Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Oct 08 2005`

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Last modified November 25 13:47 EST 2009. Contains 167481 sequences.

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