A050522 - OEIS

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A050522

Primes of form 5*2^n-1.

19, 79, 1279, 5119, 20479, 81919, 1310719, 21474836479, 1407374883553279, 90071992547409919, 23611832414348226068479, 1784059615882449851322857461811868920478433279 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	LINKS	`Index entries for sequences of n such that k2^n-1 (or k2^n+1) is prime`
	MATHEMATICA	`Select[Table[52^n-1, {n, 0, 150}], PrimeQ] ( Jean-François Alcover Mar 21 2011 *)`
	CROSSREFS	`See A001770 for more terms.` `Sequence in context: A139941 A127270 A053665 * A172973 A071633 A044206` `Adjacent sequences: A050519 A050520 A050521 * A050523 A050524 A050525`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Dec 29 1999`

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Last modified February 16 19:23 EST 2012. Contains 205945 sequences.