Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.

A087342

Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.

Terms

    a(0) =1a(1) =32a(2) =321a(3) =5432a(4) =98765a(5) =765432a(7) =98765432a(8) =987654321

External references