Numbers n such that (10^(2n+1)+63*10^n-1)/9 is prime.
A107648
Numbers n such that (10^(2n+1)+63*10^n-1)/9 is prime.
Terms
- a(0) =1a(1) =4a(2) =6a(3) =7a(4) =384a(5) =666a(6) =675a(7) =3165a(8) =131020
External references
- oeis: A107648
A107648
Numbers n such that (10^(2n+1)+63*10^n-1)/9 is prime.