(n concatenated n times) - n^n.

A083451

(n concatenated n times) - n^n.

Terms

    a(0) =0a(1) =18a(2) =306a(3) =4188a(4) =52430a(5) =620010a(6) =6954234a(7) =72111672a(8) =612579510

External references