Smallest multiple of the concatenation of n down to 1 that begins with the concatenation of 1 up to n.

A078206

Smallest multiple of the concatenation of n down to 1 that begins with the concatenation of 1 up to n.

Terms

    a(0) =1a(1) =126a(2) =123264a(3) =12340776a(4) =1234553367a(5) =123456631959

External references