Primes of the form k*10^x + k - 1, where 0 < k < 9, x = 0,1,2,3...
A108817
Primes of the form k*10^x + k - 1, where 0 < k < 9, x = 0,1,2,3...
Terms
- a(0) =3a(1) =5a(2) =7a(3) =11a(4) =13a(5) =43a(6) =4003a(7) =40000003a(8) =40000000003
External references
- oeis: A108817