A120024 Numbers k such that 2*6^k-1 and 2*6^k+1 are twin primes.

1, 2, 3, 4, 2175

Offset: 1

Author

Pierre CAMI, Jun 04 2006

Keywords

• more
• nonn

Comments

No more terms through 10^4. - Ryan Propper, Dec 31 2007

No more terms through 2.5*10^5, using comments in A057472, A120023. - Michael S. Branicky, Sep 29 2024

Crossrefs

Intersection of A057472 and A120023.

Programs

Mathematica

Select[Range[2175],PrimeQ[2*6^#-1]&&PrimeQ[2*6^#+1]&] (* James C. McMahon, Sep 24 2024 *)