A138647 - OEIS

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A138647

Primes of form (5^n+1)/6.

521, 11293772630057337854244300009061892827351888021, 6573840876841765045097738044023218580610053625908525039752324422200521, 164346021921044126127443451100580464515251340647713125993808110555013021 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	MATHEMATICA	`a={}; Do[x=(5^n+1)/6; If[PrimeQ[x], AppendTo[a, x]], {n, 0, 12^2}]; a` `Select[(5^Range[0, 200]+1)/6, PrimeQ] (* From Harvey P. Dale, Jul 18 2011 *)`
	CROSSREFS	`Sequence in context: A028484 A057699 A033525 * A045050 A004968 A128809` `Adjacent sequences: A138644 A138645 A138646 * A138648 A138649 A138650`
	KEYWORD	`nonn`
	AUTHOR	`Vladimir Orlovsky (4vladimir(AT)gmail.com), May 15 2008`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.