id:A110337 - OEIS Search Results

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a(n) = 2n+1 if 2n+1 is prime else a(n) = least prime of the form (2n+1)(2n+3)...(2n+2k-1) + 2.

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3, 5, 7, 101, 11, 13, 257, 17, 19, 9454727, 23, 677, 801011, 29, 31, 42737, 1297, 37, 1601, 41, 43, 5285387, 47, 410006013351009077, 148667, 53, 3137, 14737907, 59, 64, 1529270318745462748663049625086428127 (list; graph; listen)

	OFFSET	`2,1`
	EXAMPLE	`a(4) = 9*11+2= 101, as 9 is composite.`
	CROSSREFS	`Cf. A110336.` `Sequence in context: A082697 A051345 A104388 this_sequence A132287 A046201 A128344` `Adjacent sequences: A110334 A110335 A110336 this_sequence A110338 A110339 A110340`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 20 2005`
	EXTENSIONS	`More terms from Victoria Sapko (vsapko(AT)frc.mass.edu), Sep 28 2007`

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

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