id:A118257 - OEIS Search Results

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Numbers n such that A118255(n) is prime.

+0
6

2, 6, 8, 10, 18, 26, 30, 74, 142, 203, 398, 651, 792, 1314, 3487, 5978, 6240, 7814, 8054, 8673, 21436, 23947 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A118255(1314) is prime with 396 digits` `A118255(23947) is a probable prime with 7209 digits. - from Giovanni Resta (g.resta(AT)iit.cnr.it), Apr 26 2006`
	EXAMPLE	`A118255(2)=2 prime, A118255(6)=149 prime, A118255(8)=599 prime`
	CROSSREFS	`Cf. A005171 A118255 A118256.` `Sequence in context: A095736 A084909 A038619 this_sequence A066762 A066198 A108417` `Adjacent sequences: A118254 A118255 A118256 this_sequence A118258 A118259 A118260`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Apr 19 2006`
	EXTENSIONS	`a(15)-a(22) from Giovanni Resta (g.resta(AT)iit.cnr.it), Apr 26 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.