Numbers k such that k^2 contains exactly 2 distinct digits and k^3 contains exactly 3 distinct digits.
A247047
Numbers k such that k^2 contains exactly 2 distinct digits and k^3 contains exactly 3 distinct digits.
Terms
- a(0) =5a(1) =6a(2) =8a(3) =9a(4) =15a(5) =30a(6) =173a(7) =300a(8) =3000a(9) =30000a(10) =300000a(11) =3000000a(12) =30000000a(13) =300000000a(14) =3000000000a(15) =30000000000a(16) =300000000000
External references
- oeis: A247047