a(n) = smallest number with n+1 digits and without zero digits whose squares have the maximal number of zero digits = A135215(n+1).
A135217
a(n) = smallest number with n+1 digits and without zero digits whose squares have the maximal number of zero digits = A135215(n+1).
Terms
- a(0) =32a(1) =448a(2) =3747a(3) =62498a(4) =248998a(5) =6244998a(6) =31623251a(7) =498998998a(8) =2449489753a(9) =28284271249
External references
- oeis: A135217