id:A111981 - OEIS Search Results

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A111981

Numbers n such that 2n-1 and 2n+3 are consecutive primes.

+0
3

4, 7, 10, 19, 22, 34, 40, 49, 52, 55, 64, 82, 97, 112, 115, 139, 154, 157, 175, 190, 199, 220, 229, 232, 244, 250, 307, 322, 337, 370, 379, 385, 412, 427, 430, 439, 442, 454, 469, 484, 505, 544, 547, 607, 640, 649, 652, 712, 715, 724, 742, 745, 775, 784, 790 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = (A029708(n)-1)/2 = (A029710(n)+1)/2 = (A031505(n)-3)/2.`
	CROSSREFS	`Essentially the same as A088762.` `Sequence in context: A088408 A027752 A161334 this_sequence A080922 A161863 A102649` `Adjacent sequences: A111978 A111979 A111980 this_sequence A111982 A111983 A111984`
	KEYWORD	`nonn`
	AUTHOR	`Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 24 2005`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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