id:A098857 - OEIS Search Results

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Numbers n such that 4^n*(2^n-1)-1 is prime.

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1, 2, 18, 40, 50, 60, 62, 2688, 2880, 23678 (list; graph; listen)

	OFFSET	`1,2`
	CROSSREFS	`Sequence in context: A099904 A137308 A050594 this_sequence A072278 A131538 A009820` `Adjacent sequences: A098854 A098855 A098856 this_sequence A098858 A098859 A098860`
	KEYWORD	`more,nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Oct 11 2004`
	EXTENSIONS	`One more term from Ray G. Opao (1260(AT)email.com), Sep 19 2005`

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