id:A023289 - OEIS Search Results

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Numbers n such that n remains prime through 3 iterations of function f(x) = 6x + 7.

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5, 37, 127, 347, 977, 2017, 3607, 5477, 9137, 10487, 13687, 14057, 14107, 19037, 19697, 19727, 20507, 22157, 23887, 24097, 25237, 25307, 26717, 26777, 27107, 29347, 30697, 33757, 33997, 34667, 34847, 35117, 35227, 37057, 40577, 40627, 41177, 41597 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A099937 A142036 A089195 this_sequence A006468 A144954 A146195` `Adjacent sequences: A023286 A023287 A023288 this_sequence A023290 A023291 A023292`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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

AT&T Labs Research