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A046154
Primes of the form n*2^phi(n)+1 with phi the Euler function.
2
3, 5, 13, 17, 449, 577, 193, 1153, 86017, 26214401, 114689, 7681, 147457, 754974721, 215504279044097, 14155777, 69206017, 4943727411754159833089, 6269010681299730433, 96757023244289, 31525197391593473, 8658654068737
OFFSET
1,1
COMMENTS
Sorted along increasing n of the definition. [From R. J. Mathar, Oct 10 2010]
LINKS
MATHEMATICA
Select[Table[n*2^EulerPhi[n]+1, {n, 1, 1000}], PrimeQ] (* Vincenzo Librandi, Jul 13 2012 *)
CROSSREFS
Sequence in context: A283398 A084706 A002716 * A180120 A377318 A075704
KEYWORD
hard,nonn
AUTHOR
EXTENSIONS
More terms from R. J. Mathar, Oct 10 2010
STATUS
approved