A291991 Primes of the form Phi(k, -9), where Phi is the cyclotomic polynomial.

73, 530713, 6481, 47763361, 42521761, 150094634909578633, 13490012358249728401, 282429005041, 19966781110160346782368664772328944885905284750420567849, 1076050302914923449767311155851656076154481

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..13

Yves Gallot, Cyclotomic polynomials and prime numbers

Index entries for cyclotomic polynomials,values at X

Mathematica

Select[Table[Cyclotomic[k, -9], {k, 0, 100}], PrimeQ[#] &]

Crossrefs

Cf. A138921.

Sequence in context: A232307 A232457 A262662 * A188957 A159438 A291992

Adjacent sequences: A291988 A291989 A291990 * A291992 A291993 A291994

Keyword

nonn

Author

Robert Price, Sep 07 2017

Status

approved