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A291990 Primes of the form Phi(k, -10), where Phi is the cyclotomic polynomial. 1
101, 9091, 909091, 9901, 909090909090909091, 99990001, 909090909090909090909090909091, 999999000001, 1111111111111111111, 11111111111111111111111, 9999999900000001, 9090909090909090909090909090909090909090909090909091 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..18

Yves Gallot, Cyclotomic polynomials and prime numbers

Index entries for cyclotomic polynomials,values at X

MATHEMATICA

Select[Table[Cyclotomic[k, -10], {k, 3, 100}], PrimeQ[#] &]

CROSSREFS

Cf. A138920.

Sequence in context: A167626 A017764 A217677 * A152756 A265172 A153500

Adjacent sequences:  A291987 A291988 A291989 * A291991 A291992 A291993

KEYWORD

nonn

AUTHOR

Robert Price, Sep 07 2017

STATUS

approved

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Last modified February 21 07:18 EST 2018. Contains 299390 sequences. (Running on oeis4.)