Primes such that the outer 2 digits are n and n-1 and all inner digits are 2, where 0 < n < 9.
A108830
Primes such that the outer 2 digits are n and n-1 and all inner digits are 2, where 0 < n < 9.
Terms
- a(0) =827a(1) =2221a(2) =42223a(3) =4222222223a(4) =42222222223
External references
- oeis: A108830