Number of primes p with 10^(n-1) < p < 10^n such that 10^n-p is also prime.
A359120
Number of primes p with 10^(n-1) < p < 10^n such that 10^n-p is also prime.
Terms
- a(0) =3a(1) =11a(2) =47a(3) =221a(4) =1433a(5) =9579a(6) =69044a(7) =519260a(8) =4056919a(9) =32504975a(10) =266490184a(11) =2224590493a(12) =18850792161
External references
- oeis: A359120