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URL: https://oeis.org/A120024

⇱ A120024 - OEIS

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A120024
Numbers k such that 2*6^k-1 and 2*6^k+1 are twin primes.
1
1, 2, 3, 4, 2175
OFFSET
1,2
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
MATHEMATICA
Select[Range[2175], PrimeQ[2*6^#-1]&&PrimeQ[2*6^#+1]&] (* James C. McMahon, Sep 24 2024 *)
CROSSREFS
Intersection of A057472 and A120023.
Sequence in context: A004899 A085081 A004910 * A062929 A038105 A143716
KEYWORD
more,nonn
AUTHOR
Pierre CAMI, Jun 04 2006
STATUS
approved