Primes of the form 1 + Product_{j=0..k} (2^j + 1).
A156895
Primes of the form 1 + Product_{j=0..k} (2^j + 1).
Terms
- a(0) =3a(1) =7a(2) =31a(3) =271a(4) =4591a(5) =151471a(6) =9845551a(7) =326409519151
External references
- oeis: A156895
A156895
Primes of the form 1 + Product_{j=0..k} (2^j + 1).