Primes of the form m = 10^i + 10^j - 1, where i > j >= 0.
A239720
Primes of the form m = 10^i + 10^j - 1, where i > j >= 0.
Terms
- a(0) =109a(1) =1009a(2) =10009a(3) =10099a(4) =100999a(5) =1000099a(6) =1000999a(7) =1000000009a(8) =1000009999a(9) =1000099999a(10) =1009999999a(11) =10000000999a(12) =10000099999a(13) =10999999999a(14) =100999999999
External references
- oeis: A239720