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A138647
Primes of form (5^n+1)/6.
1
521, 11293772630057337854244300009061892827351888021, 6573840876841765045097738044023218580610053625908525039752324422200521, 164346021921044126127443451100580464515251340647713125993808110555013021
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..4.
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] (*
Harvey P. Dale
, Jul 18 2011 *)
CROSSREFS
Sequence in context:
A028484
A057699
A033525
*
A045050
A305268
A004968
Adjacent sequences:
A138644
A138645
A138646
*
A138648
A138649
A138650
KEYWORD
nonn
AUTHOR
Vladimir Joseph Stephan Orlovsky
, May 15 2008
STATUS
approved
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Last modified August 26 04:38 EDT 2024. Contains 375454 sequences. (Running on oeis4.)