id:A066653 - OEIS Search Results

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Square-free numbers n such that the pair 2*n +/- 1 is a twin prime.

+0
3

2, 3, 6, 15, 21, 30, 51, 69, 114, 141, 174, 210, 231, 285, 309, 321, 330, 411, 429, 510, 546, 615, 645, 651, 714, 741, 834, 849, 861, 894, 939, 966, 1041, 1065, 1119, 1155, 1191, 1329, 1365, 1401, 1626, 1686, 1695, 1731, 1770 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`2a(6) +/- 1 = 230 +/- 1 = (59, 61) = (A000040(17), A000040(18)) = (A001359(7), A006512(7)) = (A066652(10), A066651(13)).`
	CROSSREFS	`Cf. A014574, A066652, A066652.` `Sequence in context: A118986 A091138 A090983 this_sequence A081945 A100249 A138477` `Adjacent sequences: A066650 A066651 A066652 this_sequence A066654 A066655 A066656`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jan 10 2002`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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