For n > 1, a(n) is the least multiple of n that can be obtained by adding one digit to each end of a(n-1).

A090490

For n > 1, a(n) is the least multiple of n that can be obtained by adding one digit to each end of a(n-1).

Terms

    a(0) =1a(1) =110a(2) =11100a(3) =1111000a(4) =111110000a(5) =11111100000

External references