id:A066876 - OEIS Search Results

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Numbers n such that prime(n+2)+prime(n-2)=2*prime(n).

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5, 6, 7, 27, 28, 36, 41, 54, 80, 82, 94, 126, 127, 131, 160, 177, 236, 248, 287, 339, 362, 385, 387, 400, 401, 410, 432, 433, 477, 485, 566, 579, 580, 581, 586, 599, 689, 700, 735, 744, 793, 821, 863, 874, 954, 1031, 1043, 1069, 1081, 1113, 1143, 1145, 1193 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`If (prime(n+2)+prime(n-2))/prime(n) is integer, that can only be 2.`
	MATHEMATICA	`Select[Range[3, 1200], Prime[ # ] == (Prime[ # + 2] + Prime[ # - 2])/2 &] (Chandler)`
	CROSSREFS	`Adjacent sequences: A066873 A066874 A066875 this_sequence A066877 A066878 A066879` `Sequence in context: A111018 A078694 A048007 this_sequence A048042 A048090 A048027`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 21 2002`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jan 09 2007`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

AT&T Labs Research