a(1) =5, a(n) = smallest multiple of a(n-1) (not equal to 10^k*a(n-1)) obtained by inserting digits anywhere in a(n-1).
A080490
a(1) =5, a(n) = smallest multiple of a(n-1) (not equal to 10^k*a(n-1)) obtained by inserting digits anywhere in a(n-1).
Terms
- a(0) =5a(1) =15a(2) =105a(3) =10185a(4) =10011855a(5) =100128561855
External references
- oeis: A080490