a(1) = 4; 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.

A077700

a(1) = 4; 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) =4a(1) =24a(2) =264a(3) =14256a(4) =456192a(5) =26459136a(6) =635019264a(7) =153039642624

External references