Smallest n-digit squarefree number whose internal as well as external digits form a squarefree number greater than 1; or 0 if no such number exists.
A077379
Smallest n-digit squarefree number whose internal as well as external digits form a squarefree number greater than 1; or 0 if no such number exists.
Terms
- a(0) =0a(1) =0a(2) =123a(3) =1021a(4) =10021a(5) =100021a(6) =1000021a(7) =10000021a(8) =100000021a(9) =1000000021a(10) =10000000021a(11) =100000000021
External references
- oeis: A077379