Primes such that the outer 2 digits are k and k+1 and all inner digits are 7, where 0 < k < 9.
A108824
Primes such that the outer 2 digits are k and k+1 and all inner digits are 7, where 0 < k < 9.
Terms
- a(0) =677a(1) =8779a(2) =27773a(3) =67777a(4) =8777779a(5) =27777777773a(6) =67777777777
External references
- oeis: A108824