id:A157834 - OEIS Search Results

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Numbers n such that 3n-2 and 3n+2 are both prime.

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3, 5, 7, 13, 15, 23, 27, 33, 35, 37, 43, 55, 65, 75, 77, 93, 103, 105, 117, 127, 133, 147, 153, 155, 163, 167, 205, 215, 225, 247, 253, 257, 275, 285, 287, 293, 295, 303, 313, 323, 337, 363, 365, 405, 427, 433, 435, 475, 477, 483, 495, 497, 517 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`Intersection of A024893 and A153183.` `a(n) = A029708(n)/3. [From Zak Seidov (zakseidov(AT)yahoo.com), Aug 07 2009]`
	EXAMPLE	`15 +/- 2 = 43,47 (both prime).`
	CROSSREFS	`A024893 (Numbers n such that 3*n+2 is prime), A153183 (Numbers n such that 3n-2 is prime).` `Sequence in context: A007591 A097687 A032911 this_sequence A008996 A031163 A106119` `Adjacent sequences: A157831 A157832 A157833 this_sequence A157835 A157836 A157837`
	KEYWORD	`nonn`
	AUTHOR	`Kyle D. Balliet (kdballie(AT)bloomu.edu), Mar 07 2009`
	EXTENSIONS	`More terms from Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 03 2009`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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