Primes of the form aaaa...aa1 where a is 6, 7, 8 or 9.
A109549
Primes of the form aaaa...aa1 where a is 6, 7, 8 or 9.
Terms
- a(0) =61a(1) =71a(2) =661a(3) =881a(4) =991a(5) =6661a(6) =99991a(7) =9999991a(8) =6666666661
External references
- oeis: A109549