Primes of the form ((2 + sqrt(3))^(2*k+1) + (2 - sqrt(3))^(2*k+1))/4.
A117808
Primes of the form ((2 + sqrt(3))^(2*k+1) + (2 - sqrt(3))^(2*k+1))/4.
Terms
- a(0) =3a(1) =13a(2) =181a(3) =2521a(4) =489061a(5) =6811741a(6) =1321442641a(7) =18405321661
External references
- oeis: A117808