Repunits with odd indices multiplied by 99, i.e., 99*(1, 111, 11111, 1111111, ...).
A274743
Repunits with odd indices multiplied by 99, i.e., 99*(1, 111, 11111, 1111111, ...).
Terms
- a(0) =99a(1) =10989a(2) =1099989a(3) =109999989a(4) =10999999989
External references
- oeis: A274743