Partial sums of repdigits of A002280.

A099673

Partial sums of repdigits of A002280.

Terms

    a(0) =6a(1) =72a(2) =738a(3) =7404a(4) =74070a(5) =740736a(6) =7407402a(7) =74074068a(8) =740740734a(9) =7407407400a(10) =74074074066a(11) =740740740732

External references