a(n) = (10^n - 1)/9*prime(n).
A064008
a(n) = (10^n - 1)/9*prime(n).
Terms
- a(0) =2a(1) =33a(2) =555a(3) =7777a(4) =122221a(5) =1444443a(6) =18888887a(7) =211111109a(8) =2555555553a(9) =32222222219a(10) =344444444441
External references
- oeis: A064008
A064008
a(n) = (10^n - 1)/9*prime(n).