A250184 Numbers n such that Phi(33,n) is prime, where Phi is the cyclotomic polynomial.

2, 3, 13, 14, 18, 31, 44, 59, 62, 75, 80, 104, 109, 145, 185, 213, 273, 282, 309, 321, 337, 379, 399, 405, 411, 430, 452, 464, 470, 522, 535, 560, 566, 586, 593, 597, 653, 654, 688, 702, 704, 727, 728, 744, 746, 780, 805, 806, 816, 822, 829, 846, 856

Offset

1,1

Links

G. C. Greubel, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[900], PrimeQ[Cyclotomic[33, #]] &] (* Vincenzo Librandi, Jan 17 2015 *)

Prog

(PARI) isok(n) = isprime(polcyclo(30, n)); \\ Michel Marcus, Jan 17 2015

Crossrefs

Cf. A246392.

Sequence in context: A056445 A171483 A100385 * A128460 A273617 A101541

Adjacent sequences: A250181 A250182 A250183 * A250185 A250186 A250187

Keyword

nonn

Author

R. J. Mathar, Jan 12 2015

Status

approved