a(1) = 5, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

A082780

a(1) = 5, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Terms

    a(0) =5a(1) =55a(2) =5005a(3) =505505a(4) =5005005005

External references