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A291994
Primes of the form Phi(k, -6), where Phi is the cyclotomic polynomial.
1
31, 37, 43, 1297, 46441, 51828151, 55987, 1950271, 2527867231, 1678321, 3655688315536801, 189491931189200021056951, 1822428931, 412482688627178079807598675848631, 4760317816590150361, 534577564460822791430647883899825591, 7369130657357778596659
OFFSET
1,1
MATHEMATICA
Select[Table[Cyclotomic[k, -6], {k, 0, 100}], PrimeQ[#] &]
CROSSREFS
Cf. A138924.
Sequence in context: A073521 A180540 A279846 * A255223 A230225 A129998
KEYWORD
nonn
AUTHOR
Robert Price, Sep 07 2017
STATUS
approved