Number of numbers below 10^n with nonzero multiplicative digital root 5.
A051825
Number of numbers below 10^n with nonzero multiplicative digital root 5.
Terms
- a(0) =1a(1) =8a(2) =66a(3) =488a(4) =3360a(5) =23132a(6) =165550a(7) =1262132a(8) =10302943a(9) =88755142a(10) =788594730a(11) =7086051536a(12) =63890207069a(13) =581627969769
External references
- oeis: A051825