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A125885 Numbers n for which n^7+n^6-1 is prime. 15
2, 4, 12, 17, 27, 39, 45, 46, 72, 94, 105, 106, 122, 126, 147, 149, 151, 156, 160, 161, 166, 169, 171, 172, 192, 194 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

MATHEMATICA

Do[If[PrimeQ[x^7 + x^6 - 1], Print[x]], {x, 1, 200}]

PROG

(PARI) is(n)=isprime(n^7+n^6-1) \\ Charles R Greathouse IV, May 15 2013

CROSSREFS

Cf. A000040, A045546, A125881-A125885.

Sequence in context: A233191 A192533 A085931 * A067929 A064361 A303403

Adjacent sequences:  A125882 A125883 A125884 * A125886 A125887 A125888

KEYWORD

nonn

AUTHOR

Artur Jasinski, Dec 14 2006

STATUS

approved

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Last modified November 15 10:08 EST 2018. Contains 317233 sequences. (Running on oeis4.)