Numbers k such that 58/111*(10^(3*k)-1)-1 is prime.
A178321
Numbers k such that 58/111*(10^(3*k)-1)-1 is prime.
Terms
- a(0) =1a(1) =2a(2) =15a(3) =74a(4) =278a(5) =541a(6) =668a(7) =1320a(8) =1780a(9) =1874a(10) =4824a(11) =13310a(12) =20420a(13) =24887
External references
- oeis: A178321