Number of combinations of two natural numbers that together have n digits.

A096302

Number of combinations of two natural numbers that together have n digits.

Terms

    a(0) =81a(1) =1620a(2) =24300a(3) =324000a(4) =4050000a(5) =48600000a(6) =567000000a(7) =6480000000a(8) =72900000000a(9) =810000000000

External references