A292006 - OEIS

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A292006

Primes of the form Phi(k, -2), where Phi is the cyclotomic polynomial.

1

3, 5, 11, 7, 43, 17, 31, 683, 13, 2731, 127, 331, 257, 43691, 73, 174763, 5419, 2796203, 241, 8191, 151, 715827883, 65537, 131071, 524287, 22366891, 61681, 2932031007403, 18837001, 4363953127297, 262657, 15790321, 768614336404564651, 2147483647, 77158673929

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OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..85

Yves Gallot, Cyclotomic polynomials and prime numbers

Index entries for cyclotomic polynomials,values at X

MATHEMATICA

Select[Table[Cyclotomic[k, -2], {k, 0, 100}], PrimeQ[#] &]

CROSSREFS

Sequence in context: A287939 A129738 A271314 * A105603 A264987 A170835

Adjacent sequences: A292003 A292004 A292005 * A292007 A292008 A292009

KEYWORD

nonn

AUTHOR

Robert Price, Sep 07 2017

STATUS

approved