a(1) = 3, a(n) = smallest (nontrivial) multiple of a(n-1) containing n digits, a(n) not equal to 10*a(n-1).
A080447
a(1) = 3, a(n) = smallest (nontrivial) multiple of a(n-1) containing n digits, a(n) not equal to 10*a(n-1).
Terms
- a(0) =3a(1) =12a(2) =108a(3) =1188a(4) =10692a(5) =117612a(6) =1058508a(7) =11643588a(8) =104792292a(9) =1152715212a(10) =10374436908a(11) =114118805988
External references
- oeis: A080447