id:A110998 - OEIS Search Results

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Numbers n such that (23*n^2) - 9 is prime.

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2, 4, 16, 38, 40, 44, 70, 82, 86, 88, 116, 128, 130, 142, 152, 158, 170, 178, 194, 224, 226, 238, 262, 268, 298, 304, 310, 320, 346, 352, 362, 364, 368, 392, 406, 418, 434, 446, 452, 458, 460, 472, 478, 490, 494 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`If n=88 then (23*n^2) - 9 = 178103 (prime).`
	MATHEMATICA	`Select[Range[500], PrimeQ[(23#^2 - 9)] &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 28 2006`
	CROSSREFS	`Sequence in context: A087965 A074411 A000216 this_sequence A051861 A048222 A062330` `Adjacent sequences: A110995 A110996 A110997 this_sequence A110999 A111000 A111001`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Sep 30 2005`
	EXTENSIONS	`More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 28 2006`

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Last modified December 21 10:15 EST 2009. Contains 171081 sequences.

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