Number of n-digit numbers with nonzero multiplicative digital root 5.

A051816

Number of n-digit numbers with nonzero multiplicative digital root 5.

Terms

    a(0) =1a(1) =7a(2) =58a(3) =422a(4) =2872a(5) =19772a(6) =142418a(7) =1096582a(8) =9040811a(9) =78452199a(10) =699839588a(11) =6297456806a(12) =56804155533a(13) =517737762700

External references