a(1) = 7; a(n) is the smallest multiple of a(n-1) that contains all the digits of a(n-1) and is not a multiple of 10.

A077706

a(1) = 7; a(n) is the smallest multiple of a(n-1) that contains all the digits of a(n-1) and is not a multiple of 10.

Terms

    a(0) =7a(1) =77a(2) =1771a(3) =171787a(4) =67168717a(5) =12627718796

External references