id:A023306 - OEIS Search Results

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Numbers n such that n remains prime through 4 iterations of function f(x) = 2x + 9.

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11, 31, 1181, 2521, 3701, 4211, 4931, 8221, 8461, 9871, 11981, 13121, 14591, 16381, 16901, 21991, 23021, 34961, 36781, 37691, 43991, 44531, 45181, 46021, 46051, 52321, 57601, 59921, 62081, 75391, 89071, 92051, 95621, 105361, 115211, 124171, 128461 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A068715 A093881 A111015 this_sequence A068839 A060857 A045982` `Adjacent sequences: A023303 A023304 A023305 this_sequence A023307 A023308 A023309`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

AT&T Labs Research