Primes such that the outer 2 digits are n and n+1 and all inner digits are 9, where 0 < n < 9.
A108828
Primes such that the outer 2 digits are n and n+1 and all inner digits are 9, where 0 < n < 9.
Terms
- a(0) =293a(1) =6997a(2) =8999a(3) =69997a(4) =299993a(5) =6999997a(6) =89999999a(7) =29999999993a(8) =69999999997
External references
- oeis: A108828