A046154 Primes of the form n*2^phi(n)+1 with phi the Euler function.

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

Vincenzo Librandi, Table of n, a(n) for n = 1..45

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 A075704 A045413

Adjacent sequences: A046151 A046152 A046153 * A046155 A046156 A046157

Keyword

hard,nonn

Author

Felice Russo

Extensions

More terms from R. J. Mathar, Oct 10 2010

Status

approved