Numbers of the form 123...n - (n+1).

A234964

Numbers of the form 123...n - (n+1).

Terms

    a(0) =9a(1) =119a(2) =1229a(3) =12339a(4) =123449a(5) =1234559a(6) =12345669a(7) =123456779a(8) =12345678899

External references