Total number of n-digit positive integers with multiplicative digital root value 8.

A263481

Total number of n-digit positive integers with multiplicative digital root value 8.

Terms

    a(0) =1a(1) =22a(2) =138a(3) =889a(4) =4921a(5) =26687a(6) =154539a(7) =870270a(8) =4437621a(9) =20367762a(10) =86589471a(11) =388661761a(12) =2366418106a(13) =18602433227a(14) =142978182070a(15) =952075901928

External references