A217353 Numbers n such that 8^n - 3 is prime.

1, 2, 3, 4, 8, 50, 58, 71, 112, 1079, 1318, 2252, 3524, 4800, 5560, 6919, 11484, 41099, 94711

Offset

1,2

Comments

3*A217353 is a subsequence of A050414. - Bruno Berselli, Oct 02 2012

Links

Table of n, a(n) for n=1..19.

Mathematica

Select[Range[5000], PrimeQ[8^# - 3] &]

Prog

(PARI) is(n)=ispseudoprime(8^n-3) \\ Charles R Greathouse IV, May 22 2017

Crossrefs

Cf. A050414, A059266, A217354.

Sequence in context: A128657 A105421 A273063 * A258194 A033554 A091930

Adjacent sequences: A217350 A217351 A217352 * A217354 A217355 A217356

Keyword

nonn,more

Author

Vincenzo Librandi, Oct 02 2012

Extensions

a(15)-a(19) are obtained from A050414; by Bruno Berselli, Oct 02 2012

Status

approved