id:A096691 - OEIS Search Results

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Numbers n such that 8n^2 + 6n + 3 is prime.

+0
4

0, 1, 2, 5, 8, 10, 13, 17, 20, 22, 23, 25, 31, 32, 37, 38, 40, 41, 43, 46, 47, 55, 61, 70, 80, 82, 85, 88, 91, 100, 101, 106, 107, 110, 112, 116, 118, 125, 131, 148, 151, 152, 155, 160, 161, 163, 166, 172, 173, 176, 196, 200, 202, 211, 212, 223, 226, 227, 245, 247 (list; graph; listen)

	OFFSET	`1,3`
	FORMULA	`a(n) = A096689(n)/2.`
	MATHEMATICA	`f[n_]:=n^2+(n+1)^2+(n+2); lst={}; Do[p=f[n]; If[PrimeQ[p], AppendTo[lst, n/2]], {n, 0, 6!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jul 04 2009]`
	CROSSREFS	`Cf. A095697, A096689, A096690.` `Sequence in context: A025284 A140328 A000415 this_sequence A070216 A100829 A030713` `Adjacent sequences: A096688 A096689 A096690 this_sequence A096692 A096693 A096694`
	KEYWORD	`nonn`
	AUTHOR	`Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 12 2004`

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.

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