a(1) = 1, a(2) = 5. For n >= 3, a(n) is found by concatenating the first n-1 terms of the sequence and then dividing the resulting number by a(n-1).

A181755

a(1) = 1, a(2) = 5. For n >= 3, a(n) is found by concatenating the first n-1 terms of the sequence and then dividing the resulting number by a(n-1).

Terms

    a(0) =1a(1) =5a(2) =3a(3) =51a(4) =301a(5) =51001a(6) =30100001

External references