a(n) = largest number with n+1 digits and without zero digits whose squares have maximal number of zero digits = A135215(n+1).
A135219
a(n) = largest number with n+1 digits and without zero digits whose squares have maximal number of zero digits = A135215(n+1).
Terms
- a(0) =99a(1) =949a(2) =9798a(3) =62498a(4) =997998a(5) =6244998
External references
- oeis: A135219