id:A163630 - OEIS Search Results

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Numbers such that the two adjacent integers are a prime and 7 times a prime.

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20, 22, 36, 48, 78, 90, 132, 162, 258, 330, 372, 468, 498, 510, 678, 708, 720, 750, 762, 888, 918, 972, 1098, 1170, 1212, 1380, 1560, 1602, 1758, 1800, 1980, 2052, 2178, 2220, 2358, 2442, 2472, 2610, 2682, 2778, 2862 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(2)=22 lies between 21=7A000040(2) and 23=A000040(9).` `a(3)=36 lies between 35=7A000040(3) and 37=A000040(12).`
	CROSSREFS	`Cf. A000040, A163492.` `Sequence in context: A140353 A036227 A133260 this_sequence A033906 A139357 A104059` `Adjacent sequences: A163627 A163628 A163629 this_sequence A163631 A163632 A163633`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Aug 02 2009`
	EXTENSIONS	`20 inserted, 62 removed, 90 added etc. by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 07 2009`

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Last modified March 20 09:10 EDT 2010. Contains 173642 sequences.

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