id:A111052 - OEIS Search Results

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Numbers n such that (3*n^2) + 4 is prime.

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1, 3, 5, 7, 11, 19, 21, 25, 31, 33, 37, 39, 45, 49, 53, 73, 75, 77, 81, 89, 91, 93, 107, 115, 119, 129, 131, 135, 137, 145, 157, 185, 187, 193, 203, 205, 207, 213, 215, 221, 227, 229, 231, 249, 259, 261, 263, 271, 283, 291, 297, 299, 301, 317, 325, 327, 331 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`If n=77 then (3*n^2) + 4 = 17791 (prime).`
	MATHEMATICA	`Select[Range[340], PrimeQ[3*#^2 + 4] &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 26 2006`
	CROSSREFS	`Sequence in context: A119573 A001366 A093329 this_sequence A138536 A093929 A144427` `Adjacent sequences: A111049 A111050 A111051 this_sequence A111053 A111054 A111055`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Oct 06 2005`
	EXTENSIONS	`More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 26 2006`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.

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