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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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified February 3 11:26 EST 2023. Contains 360034 sequences. (Running on oeis4.)