a(1) = 4, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

A082779

a(1) = 4, a(n) = smallest palindromic multiple of a(n-1) obtained by inserting digits anywhere in a(n-1).

Terms

    a(0) =4a(1) =44a(2) =484a(3) =48884a(4) =488888884

External references