a(1) = 1, a(n) = smallest (nontrivial) multiple of a(n-1) containing n digits, a(n) not equal to 10*a(n-1).
A080445
a(1) = 1, a(n) = smallest (nontrivial) multiple of a(n-1) containing n digits, a(n) not equal to 10*a(n-1).
Terms
- a(0) =1a(1) =11a(2) =121a(3) =1089a(4) =11979a(5) =107811a(6) =1185921a(7) =10673289a(8) =117406179a(9) =1056655611a(10) =11623211721a(11) =104608905489
External references
- oeis: A080445